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《機(jī)械畢業(yè)設(shè)計(論文)-ex400型液壓挖掘機(jī)液壓系統(tǒng)設(shè)計(全套圖紙)》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、摘要本次設(shè)計的主要履內(nèi)容是挖掘機(jī)主要零件及液壓系統(tǒng)設(shè)計。通過與其它類型挖掘機(jī)的分析比較,次種挖掘機(jī)的通用性好,應(yīng)用廣泛,當(dāng)進(jìn)入松軟或沼澤地段作業(yè)時,可以通過改變其寬度和長度以及浮式履帶的方式來降低接地比壓。全套圖紙,加液壓式的挖掘機(jī)實現(xiàn)無級調(diào)速并且具有較大的調(diào)速范圍,即使快速運(yùn)轉(zhuǎn)時也能保持較低且穩(wěn)定的轉(zhuǎn)速,采用的液壓元件可以提高性能,實現(xiàn)平穩(wěn)的傳動,此外它容易操作。本次設(shè)計的是中小型液壓挖掘機(jī),其是斗容量0.2m3,主要設(shè)計挖掘機(jī)的工作裝置、液壓傳動原理。設(shè)計時,選用了履帶式行走裝置,來滿足其作業(yè)要求。上部轉(zhuǎn)臺設(shè)定成全回轉(zhuǎn)式,所以它可以實現(xiàn)大范圍的作業(yè)。
2、同時采用的液壓傳動控制改善了其作業(yè)的整體性能。同機(jī)械式挖掘機(jī)比較,它的工作效率提高了2~3倍,整機(jī)的質(zhì)量大約為5噸,最大卸載高度約為2.65m,挖掘力約為30kN,最大挖掘半徑約為5.728m,最大挖掘深度4.2m。通過上述參數(shù),該機(jī)的整體性能得到了很大的提高,機(jī)重減輕的同時,其作業(yè)效率較高,傳動穩(wěn)定,設(shè)計的結(jié)構(gòu)更合理可靠。此外,以結(jié)構(gòu)推理為依據(jù),對機(jī)器的工作裝置進(jìn)行機(jī)構(gòu)改進(jìn)和創(chuàng)新。關(guān)鍵詞:液壓挖掘機(jī);挖掘機(jī)構(gòu);液壓系統(tǒng)AbstractThisdesignedtopicisthemarchinghydraulicexcavatorexcavational
3、withothertypesexcavators,thiskindoftypeexcavatorusedveryuniversalthatbecausehasgoodthroughtheperformance,alsomayusetolengthenswidensaswellasthefloatingtypecaterpillarbandtoreducepressureforthesoftgroundorthebogregion.Thehydraulicexcavatormaincharacteristicis:notonlycanadjuststhes
4、teplessspeedbutalsocanadjustscopeverybig,canobtainalowerstablerotationalspeed,whenactionquickly,thehydraulicpartsproduceinertiasmall,accelerationaltheperformancegood,andmaymakethehighspeedreverse,thetransmissionsteady,structuresimple,mayabsorbattacksandvibrates,theoperationreduce
5、seffort,andtobeeasytorealizetheautomatedcontrol,iseasytorealizethestandardization,theseriation,theuniversalization.Thisdesignedmainparameterisscoopcapacity0.2m3,itislongtothemiddleandsmallscalehydraulicexcavator,mainlydesigntheexcavator,stheworkinstallmentandthehydraulictransmiss
6、ionprinciple.Inthedesign,usedmarchingwalkedtheinstallmenttosatisfiedrequest.Upsidetheturnplateistheentirerotation,thereofitmayworkinagreaterscope.Andfurtherbecauseusesthehydraulicsteeringtoenabletheentiremachineperformancetoimprove.Comparedwiththemechanicaltypeexcavator,itsexcava
7、tionstrengthenhanceto2~3times,theentiremachineweightapproximatelyis5tons,theexcavationstrengthapproximatelyis30kN,thebiggestunloadinghighapproximatelyis2.65m,biggestdiggingdepthis4.2m,thebiggestexcavationradiusapproximatelyis5.728m,thuscanseetheentiremachineworkabilitytohavetheve
8、rybigimprovement,notonlyexcavationstreng