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挖掘机相关中英文翻译

ASummaryofSmall-sizeExcavatorsHomeandAbroad

I。Thebriefintroductionofhydraulicexcavator

Partssuchasthehydraulicexcavatorisbyengine,hydraulicsystemandworksdevice

andwalksdeviceandelectriccontroletcareformed。Thehydraulicsystemisformed

byhydraulicpump，controlvalve，hydrauliccylinder，hydraulicpressuremotor,pipe

ctriccontrolsystemincludessupervisiondish，motor

controlsystem，pumpbrainandvariouskindsofnsorandsolenoidvalvetc。The

hydraulicexcavatorisgeneralbytheworkdeviceandturnsroundthedeviceandwalks

ingtohisconstructionandu，wecan

differentiate：manykindsoftypessuchascaterpillartreadtype，tyretype,walk

type，fullhydraulicpressure，halfhydraulicpressure，turnsroundentirely,not

turnsroundentirely，utilityversion,mouldforaspecialpurpo,thejoiningwith

ahingetypeandarmtypestretchedoutanddrawnbacketc.

Theworkdeviceisdirectlyaccomplishingthedevicethatexcavatestheassignment.

Ithasbeenjoinedwithahingebymovesthearm,fightsthepoleandshovelsthefill

etcthreeparts。Movingthatthearmrisandfallsandthepolefoughtstretches

outanddrawsbackandshovelingfightingmovesallwithmovingbackandforthtype

rtosuittheneedsofvariousdifference

constructionschoolassignments，thehydraulicpressureexcavatorcanbejoinedin

marriageloadingmanykindsofworkdevices，ifexcavatingandmanykindsofschool

assignmentmachinesandtoolssuchasliftingjob,loading，leveling，clampandpushes

soilandshockhammeretc。

Turningroundandwalksthedeviceistheorganismofhydraulicpressureexcavator，

ineis

挖掘机相关中英文翻译

thepowersupplyofhydraulicpressureexcavator，andadoptsdieloilwillalsocan

modifytheelectromotorintheconvenientplacemostly.

Thehydraulicdrivesystembywayofthehydraulicpumpwiththeenginethemotive

promotionworkdevicemoves,thusaccomplishesthevariousschoolassignments。Take

morePV-200’smouldhydraulicpressureexcavatorsofuinbuildingsiteastheexample。

Thismachineadoptsthetypetheopeningcenterloadofadvancedversiontobepasd

feelingsystem（OLSS）。Thissystemiswithobliqueofcontroltypeobliquethemethod

ofangle(exportvolumeofflow)variableplungerpump，andreducedthepowerdelivery

ofengine,thusreducestheoilconsumptionburnt，andisonekindofsavingenergy

racteristicofthiskindofhydraulicsystemis：thefixedtorque

iscontrolled，anditisunchangeabletokeepthehydraulicpumpdrivetorque,and

yearabsolutelycontrolcanreducetheoff-loadinglossofschoolassignmenttime;Oil

capacityiscontrolled,andtheexportvolumeofflowofhydraulicpumpinthetime

ofcanreducingneutralgearandfinecontrolreducesthepowerloss。

Thehistoryofthefirsthandexcavatorwaspublisheduptonowtohavemorethan130

years，andwentthroughfromthesteamdrivefilltoturnroundthatthemachinery

turnsroundthedevelopingthecourstepbystepofthecompleteautomatichydraulic

pressureexcavatorofexcavatorandapplicationmechanicalandelectricalliquid

integrationtechnologytopowerdriveandtheinternal-combustionenginedriveinthe

time。Theapplicationowingtothehydraulictechniquehadtojoininmarriageonthe

tractorloadinghydraulicpressuretoanti—thetypehangingwhichshoveledmachinery

inthe1940’s,anddevelopingoutthepullingtypeattheinitialstageofinthe1950’

swithmiddleperiodinsuccession,toturnroundthefullhydraulicpressureof

hydraulicpressureexcavatorandcaterpillartreadtypeentirelymechanical。Initial

挖掘机相关中英文翻译

stagethetrialhydraulicpressureexcavatoristhehydraulictechniquethatadopts

planeandmachinetool，lackingthehydraulicpressurecomponentthatissuitablein

themechanicalvariousoperatingmodes，itisstableinadequatelytomakethequality,

andnecessaryisnotcompletelyyet。Frominthe1960’s,thehydraulicpressure

excavatorinteredthepopularizationandinvigorousdevelopmentstage，and

mechanicalmanufacturingplantandthebreedofeachcountryincreasveryfast，and

theoutputisrapidlyincread.83%ofthemechanicalgrossoutputwasoccupiedto

hydraulicpressureexcavatoroutput，andiscloto100％atprent1968-1970certain

period。

国内外小型挖掘机发展综述

一、液压挖掘机简介液压挖掘机是由发动机、液压系统、工作装置、行走装置和电气控制等部

分组成。液压系统由液压泵、控制阀、液压缸、液压马达、管路、油箱等组成。电气控制系统

包括监控盘、发动机控制系统、泵控制系统、各类传感器、电磁阀等.液压挖掘机一般由工作装

置、回转装置和行走装置三大部分组成.根据其构造和用途可以区分为：履带式、轮胎式、步履

式、全液压、半液压、全回转、非全回转、通用型、专用型、铰接式、伸缩臂式等多种类型。

工作装置是直接完成挖掘任务的装置.它由动臂、斗杆、铲斗等三部分铰接而成.动臂起落、斗

杆伸缩和铲斗转动都用往复式双作用液压缸控制。为了适应各种不同施工作业的需要,液压挖掘

机可以配装多种工作装置，如挖掘、起重、装载、平整、夹钳、推土、冲击锤等多种作业机具.

回转与行走装置是液压挖掘机的机体，转台上部设有动力装置和传动系统.发动机是液压挖掘机

的动力源，大多采用柴油要在方便的场地，也可改用电动机。

液压传动系统通过液压泵将发动机的动力传递给液压马达、液压缸等执行元件，推动工作装置

动作，从而完成各种作业.以工地使用较多的PV—200型液压挖掘机为例.该机采用改进型的开

式中心负荷传感系统(OLSS）。该系统用控制斜盘式变量柱塞泵斜盘角（输出流量）的方法，

挖掘机相关中英文翻译

减少了发动机的功率输出,从而减少燃油消耗,是一种节能型系统。这种液压系统的特点是：定

转矩控制，能维持液压泵驱动转矩不变,载断控制,可以减少作业时间的卸荷损失；油量控制，

可减少空挡和小调控制时液压泵的输出流量，减少功率损失。

械到电力驱动和内燃机驱动回转挖掘机、应用机电液一体化技术的全自动液压挖掘机的逐步发

展过程.由于液压技术的应用，20世纪40年代有了在拖拉机上配装液压反铲的悬挂式机械，20

世纪50年代初期和中期相继研制出拖式全回转液压挖掘机和履带式全液压机械.初期试制的液

压挖掘机是采用飞机和机床的液压技术,缺少适用于机械各种工况的液压元件，制造质量不够稳

定,配套件也不齐全.从20世纪60年代起，液压挖掘机进入推广和蓬勃发展阶段，各国机械制

造厂和品种增加很快，产量猛增。1968-1970年间，液压挖掘机产量已占机械总产量的83%,目

前已接近100%。