鉆孔機(jī)的進(jìn)給單位

1、外文AFEEDUNITFDRILLINGMACHINESN.N.Esin~.G.ChernilovUDC622.233.056Thefeedunitsofdrillingmachinesfeedthedrillmechanismdrillrodbittowardsthefaceduringdrillingalsoraiselowerthedrillrod.鉆孔機(jī)的進(jìn)料單元飼料朝向臉鉆頭機(jī)制，鉆桿，和位在鉆井過程中，也提高和降低的鉆桿。M

2、echanicalfeedunitswithdrivefromapneumaticmot[1]aresmallcandeveloplargefeedthrusts.Howevertheyhavecertaindrawbacks:thefeedvelocityislowwhichincreasesthetimerequiredfauxiliaryoperationstheapparatusiscomplicatedinsufficient

3、lyreliableinusethepheumaticmotisnoisy.Pneumaticpistonfeedunits[2]aresimpleindesignreliableinusegiveelasticityofthefeedreducingwearonthebitpermittinganincreaseintheproductivityofdrilling.Howevertheyarelargebecausethethrus

4、tdevelopeddependsontheareaofthepL~tonwhichisactedonbycompressedairatacomparativelylowpressureof56kgcm2.Neverthelessthefullratedfeedthrustisquiterarelyused(fexampleinthelastfewmetersofadeepbehole).從氣動(dòng)電機(jī)的驅(qū)動(dòng)機(jī)械的進(jìn)料單元[1]是小型和發(fā)展

5、大型飼料thrusts.However，它們有一定的缺點(diǎn)：進(jìn)料速度是低的，這增加了用于輔助操作所需的時(shí)間的裝置是復(fù)雜的，不夠可靠在使用和的pheumatic馬達(dá)是喧鬧的。氣動(dòng)活塞進(jìn)料單元[2]的設(shè)計(jì)是簡單的和可靠的使用中，并且給進(jìn)料的彈性，對位減少磨損，并允許在鉆井的生產(chǎn)率增加。但是，它們是大的，因?yàn)殚_發(fā)的推力取決于是在比較低的壓力為56公斤厘米2的壓縮空氣作用在其上的區(qū)域上的皮升（pL）?噸。然而，全額定進(jìn)給推力相當(dāng)罕見（例如，在過去

6、數(shù)米的深鉆孔）。Withtheaimofimprovingtheoperationalqualitiesofdrillingmachineswehavedevelopedanewtypeofpneumaticpistonfeedunit.Itsessentialfeatureisthattheairpressureinthefeedcylindercanbeseveraltimesgreaterthanthatintheairmains

7、.Thisisachievedbymeansofapressureconverterconsistingofseveralpistonscylindersinseries.隨著鉆孔機(jī)的執(zhí)行性能的改善的目的，我們已經(jīng)開發(fā)了一種新類型的氣動(dòng)活塞進(jìn)給單元。其基本特點(diǎn)是，在進(jìn)給氣缸的空氣壓力比空氣中的電源可以是大幾倍。這是通過由幾個(gè)串聯(lián)的活塞和氣缸的壓力轉(zhuǎn)換器的裝置。Approachingitsextremeleftwardpositionpi

8、ston5opensapttocontrolductcintowhichairatmainspressurecomesfromtherighthcavityofcylinder4.Theairbearsontherighthfaceofpistonvalve8thelefthendofwhichisatthistimefreedfromloadowingtoescapeofairviaasmallholek(thecontrolduct

9、disnowcoveredbypiston5).Thepistonvalvemovestotheleft.接近極端向左的位置，活塞打開一個(gè)端口控制管C到空氣總管壓力來自右手的4缸腔。的空氣不承擔(dān)面對活塞閥8上的右手，左手端是在這個(gè)時(shí)候脫離負(fù)載由于k（下控制ductd現(xiàn)在覆蓋由活塞5）通過一個(gè)小的孔的空氣逸出?；钊y移動(dòng)到左側(cè)。InstituteofMiningSiberianBranchAcademyofSciencesoftheUSS

10、RNovosibirsk.TranslatedfromHzikoTekhnicheskieProblemyRazrabotkiPoleznykhIskopaemykhNo.4pp.115117IulyAugust1970.iginalarticlesubmittedApril31970.Whenthepistonvalveisinitsleftwardpositionfeedcylinder1isdisconnectedfromthep

11、ressureconverter.Therighthcavitiesofcylinders46areconnectedtotheexhaustviaannularspacee.Airfromthemainspassesthroughannularspaceaarrivesinthelefthcavityofcylinder4causingpiston5tappet7tomovetotheright.Wenpiston5reachesit

12、sextremerighthpositionitopensductdmainspressureairentersthelefthendofpistonvalve8.Atthistimeduetciscoveredtherighthendofthepistonvalveisreleasedfrompressure.Thepistonvalvemovestotherightthenthecycleisrepeateduntilthepres

13、sureinfeedcylinder1reachesitsmaximumvalue.9Theoperationoftheconverteristhenautomaticallystoppedisrecommencedastheairpressureinthefeederfailsowingtofwardmovementofpiston9increaseinthevolumeofthewkingcavityofthefeedcylinde

14、r.Thusthesystemoperatesathighfeedpressures.當(dāng)活塞閥是在其向左的位置，進(jìn)料缸1從壓力轉(zhuǎn)換器被斷開。的氣缸4和6在右側(cè)的腔連接到排氣通過環(huán)形空間e。從電源的空氣穿過環(huán)形空間和到達(dá)在左手腔的液壓缸4，使活塞5與挺桿7移動(dòng)到右邊。聞活塞5到達(dá)其極端的右側(cè)的位置時(shí)，它打開管道d和電源的高壓空氣進(jìn)入活塞閥8的左手端。此時(shí)二重唱c被覆蓋，并在右側(cè)端部的活塞閥的壓力釋放?；钊y移動(dòng)到右邊，然后重復(fù)該循環(huán)，直到

15、進(jìn)給氣缸1中的壓力達(dá)到其最大值。9的轉(zhuǎn)換器的操作，然后自動(dòng)停止，并重新開始供紙器中的空氣壓力發(fā)生故障，由于運(yùn)動(dòng)的活塞9和進(jìn)料缸的工作腔的體積的增加轉(zhuǎn)發(fā)。因此，該系統(tǒng)工作在高進(jìn)給壓力。Iftheresistanceofferedtorod3issmallthepistonmovesinthecylinderatlowpressures.Thenthepressureoftheairpassingviaduetftopistonvalve1

16、0cannotovercomethefceofthespringairfromthemainsiscutofffromtheconverter.Ontheotherhiftheresistanceofferedtotherodincreasessomuchthatdirectfeedviavalve9cannoteffectoperationofthefeederthenthepressureinthewkingcavityincrea

17、sestomainspressurewillbesufficienttomovevalve10totherightsothatitadmitsairtotheconverter.如果桿3提供的阻力小，所述活塞移動(dòng)，在低壓力的汽缸。然后空氣壓力為通過對唱f傳遞到活塞閥10從轉(zhuǎn)換器的彈簧的力和空氣從主電源被切斷，不能克服。另一方面，如果提供給所述桿的阻力增加這樣多，直接進(jìn)料通過閥9可以不影響供紙器的操作，那么在工作腔增加至總管壓力和中的壓力