钻孔机的进给单位

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1、外文AFEEDUNITFORDRILLINGMACHINESN.N.Esinand~.G.ChernilovUDC622.233.056Thefeedunitsofdrillingmachinesfeedthedrillmechanism,drillrod,andbittowardsthefaceduringdrilling,andalsoraiseandlowerthedrillrod.钻孔机的进料单元饲料朝向脸钻头机制，钻杆，和位在钻井过程中，也提高和降低的钻杆。Mechanicalfeedunitswit

2、hdrivefromapneumaticmotor[1]aresmallandcandeveloplargefeedthrusts.However,theyhavecertaindrawbacks:thefeedvelocityislow,whichincreasesthetimerequiredforauxiliaryoperations;theapparatusiscomplicatedandinsufficientlyreliableinuse;andthepheumaticmotorisnoisy.Pn

3、eumaticpistonfeedunits[2]aresimpleindesignandreliableinuse,andgiveelasticityofthefeed,reducingwearonthebitandpermittinganincreaseintheproductivityofdrilling.However,theyarelarge,becausethethrustdevelopeddependsontheareaofthepL~tonwhichisactedonbycompressedai

4、ratacomparativelylowpressureof5-6kg/cm2.Nevertheless,thefullratedfeedthrustisquiterarelyused(forexample,inthelastfewmetersofadeepborehole).从气动电机的驱动机械的进料单元[1]是小型和发展大型饲料thrusts.However，它们有一定的缺点：进料速度是低的，这增加了用于辅助操作所需的时间的装置是复杂的，不够可靠在使用和的pheumatic马达是喧闹的。气动活塞进料单元[2

5、]的设计是简单的和可靠的使用中，并且给进料的弹性，对位减少磨损，并允许在钻井的生产率增加。但是，它们是大的，因为开发的推力取决于是在比较低的压力为5-6公斤/厘米2的压缩空气作用在其上的区域上的皮升（pL）〜吨。然而，全额定进给推力相当罕见（例如，在过去数米的深钻孔）。Withtheaimofimprovingtheoperationalqualitiesofdrillingmachines,wehavedevelopedanewtypeofpneumaticpistonfeedunit.Itsessentia

6、lfeatureisthattheairpressureinthefeedcylindercanbeseveraltimesgreaterthanthatintheairmains.Thisisachievedbymeansofapressureconverterconsistingofseveralpistonsandcylindersinseries.随着钻孔机的执行性能的改善的目的，我们已经开发了一种新类型的气动活塞进给单元。其基本特点是，在进给气缸的空气压力比空气中的电源可以是大几倍。这是通过由几个串联

7、的活塞和气缸的压力转换器的装置。Figure1showsaschematicdiagramofthefeedunit.Theworkingpartscomprisefeedcylinder1withpiston9androd3.Thepressureconverterconsistsofcylinder4withfreelymovingpiston5andseveralsinglecylinders6withtappets7.Therodofeachtappetpassesthroughaglandinthee

8、ndwallandfreelybearsontheheadoftheprecedingtappet.Airisdistributedbypistonvalve8.Theelementsofthesystemareconnectedbyairducts,oneofwhichcontainsbackvalve9,andanothercut-offvalve10.Thefeedunitisc