毕业设计（论文）-滚筒采煤机截割部设计

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1、中国矿业大学成人教育学院2013届本科毕业设计摘要滚筒采煤机是煤炭采掘的重要设备。是实现煤矿生产机械化和现代化的重要设备之一。因此，它对提高煤的采掘效率有着重要的影响。目前，采煤机的设计技术已经发展的相当完善，但是在国内采煤机技术和国外相比依然还比较落后。本次设计在吸取了前人经验的基础上设计了大功率，适合于中厚煤层的采煤机。对于采煤机的截割部进行了革新设计，采用强力耐磨型滚筒对称布置，提高了割煤效果和滚筒寿命，降低截齿消耗量和用户成本。机械传动系统采用直齿圆柱齿轮和行星轮传动动。故传动效率高，容易安装和维护，分别用两台250KW的电动机驱动两截割部。截割部电机容

2、量调整范围宽，其调整范围为150～300Kw，通过调整截割电机容量，可实现一机多型。截割部采用四行星单浮动结构，承载能力大，减小了结构尺寸。采用大角度弯摇臂设计，加大过煤空间，提高装煤效果，卧底量大。本次设计的采煤机采煤效率高，生产可随不同的煤质的变化生产不同的机型，市场适应性强.关键词：采煤机、强力耐磨滚筒、截割部、弯摇臂、传动系统51中国矿业大学成人教育学院2013届本科毕业设计AbstractSheareisanimportantequipmentforexcavation.Itisoneoftheimportantfacilitiesforthemech

3、anizationandmodernizationofcoal-miningproduction.Henceithasimportanteffectsontheimprovementofexcavationefficiency.Presentlythedesigntechnologiesofsheareshavedevelopedrelativelyperfect.Whencomparingwithabroad,however,thetechnologyofthisareaisstillbehindhand.Basingonassimilatingtheexpe

4、rienceofpeoplehasworkedinthisarea,thisdesign,schemesoutHigh-powershearewhichissuitableformediumthicknessseam.ItdoesinnovatorydesignonthecuttingunitofshearsbyresortingtodisposalsymmetryofMightinessWornRoller,whichimprovesthecuttingeffectandlongevity.Atthesametimeitreducesthewastageoft

5、runcationstraightandcustomers’cost.AstoMachinedrivensystem,itstransmissionresortstospurgearandplanetarywheel.Hencethetransmissionefficiencyisimprovedanditsinstallationandmaintenanceareeasier.Twoofthedepartmentsofcroparedrivenbytwoseparate250kw-electromotors.Themodulationrangeofelectr

6、omotors’capacityinthedepartmentsofcropislarge,whichisrangingfrom150kwto300kw.Throughthemodulationoftheelectromotors’capacity,theonemachine-multi-typestylecanbecarriedout.Thedepartmentsofcropresorttoglobecertificatefloatingstructure,whosecarryingcapacityislargeandreducingthestructurem

7、easure.Theapplicationsofplyrockerarmincreasethecoal’stransitspaceandimprovethecoal’sloadeffect.Thebottomtakingquantityislarge.Thisdesignofshearehasthefeaturesasfollows:Theexcavationefficiencyishigh;theproductionoftypescanbedifferentaccordingtodifferentcoalquality.Theadaptabilityinmar

8、ketingisstro