KuChina yakare, ngano yeMudhara Benzi Anofamba Makomo inoenzanisira mweya usingakundiki wekutsungirira kuburikidza nekuedza zvishoma nezvishoma uye kwakadzikama.

Apo rudzi rwomunhu rwakapinda muzana ramakore rechi 18, Chinjo yeIndasitiri Yokutanga yakaunza kwete bedzi chinjo yoruzivo rwokugadzira zvinhu asiwo chinjo huru munzanga, ichipinza nguva apo michina yakatanga kutsiva basa remaoko. Kubva ipapo, indasitiri yekuchera matombo nekuchera yakakurumidza kufambira mberi kuenda kune nekukurumidza, kusimba, uye nzira dzakasimba. Munguva iyi, mafomu akasiyana-siyana eshinda yekubatanidza tsvimbo, kusanganisira API yakajairwa shinda uye wave-shaped trapezoidal threads, akagadzirwa.

Nheyo dzekushanda dzetambo idzi dzinosiyana, zvichitungamira kune zvakasiyana zvinodiwa. Nyanzvi yepamusoro muindasitiri yekuchera yakakurukura pachena tambo dzemaroller-cone drill rods nepamusoro sando dzekubooresa. Mafungiro anopihwa akakosha zvekuti anonzi akakosha kupfuura makore gumi ekudzidza.

Petroleum roller-cone bits inoshanda nekutenderedza nekupwanya dombo, nemadrill rods uchishandisa API tambo dzakajairwa. Idzi tambo dzinongotakura axial thrust, torsional masimba, uye mamwe masimba ekukanganisa, pasina kuendesa simba rekuita kumuviri wetsvimbo. Iyo API yakajairwa tambo dzakagadzirirwa kunyanya kubatanidza, kusungira, uye kuisa chisimbiso, zvichikonzera kushoma kushandiswa kwesimba uye kushomeka kwekupisa.

Mukupesana, nyundo dzepamusoro dzinoboorwa tambo dzinowanzoshandisa R-yakaumbwa kana T-shinda. Simba rinobva pa hydraulic rock drill rinofambiswa kuburikidza netsvimbo kuenda kuchibhorani, zvichitungamira mukurasikirwa kukuru kwesimba sekupisa pakubatanidza tambo, netembiricha inogona kudarika 400°C. Dai shinda dzema API dzakajairwa dzakashandiswa kugadzira nyundo dzepamusoro, dzaisazongove dzisingabatsiri pakufambiswa kwesimba, asi dzaigonawo kutambudzika nekukukurwa, zvichiita kuti zviboore zviome kutsemuka uye kukanganisa zvakanyanya kushanda kwekuvaka uye kuwedzera mari.

Mumakore ekuma1970 nema80s, tsvakurudzo huru yakaitwa nenyanzvi dzokune dzimwe nyika pashinda dzinoshandiswa munyundo dzokubooresa simbi dzepamusoro, tichifunga nezvemafungu-akaumbwa, akaumbwa, akadzokera kumashure serrated, FL, uye trapezoidal shinda. Yakagumiswa kuti tambo dzakaita semasaisai dzakakodzerwa netsvimbo dzine dhayamita pasi pe38 mm, nepo trapezoidal tambo dzakanyanya kukodzera matanda ane madhayamita ari pakati pe38 mm ne51 mm.

Muzana ramakore rechi 21, nekuwedzera kwedhayamita repamusoro nyundo uye kufunga kwesimba remidzi yeshinda, makambani ekuchera maturusi akasiyana akaunza mhando itsva dzeshinda dzakadai seSR, ST, uye GT kuburikidza nekuenderera mberi nekutsvagisa nekusimudzira.

Muchidimbu, panguva yekuchera dombo, tambo dzekubatanidza pamusoro penyundo dzekuboorwa ndiyo imwe yenzvimbo dzekutanga dzekushandiswa kwesimba uye chinhu chikuru mukutadza kwekutanga kudonha.

Sokudzidzisa kunoita Buddhism, "mabviro anotsamira haana chinhu, uye munhu haafanire kunamatira kune chero nzira imwe chete." Nekufambira mberi kuri kuita sainzi uye tekinoroji, zvakakodzera kufungisisa kana mafomu eshinda anoshandiswa parizvino ari iwo akanakisa uye ekupedzisira mhinduro yekubatanidza muindasitiri yekuchera mahydraulic.