Rig na Kai na Shafts da yawa tare da Tsarin Tafiya

Tafiya frame multi-shaft power head rigs suna tsarin hakar da aka ƙera musamman don gina ƙarfafa ƙasa na tsaye ko kusa da tsaye da tsarukan ɗaukar gurbataccen abu a cikin yanayin gini da aka takaita ko cunkoso. Waɗannan rigs suna haɗa ƙarfin hakar ci gaba tare da ƙaramin motsi, suna mai da su kayan aiki masu mahimmanci don ayyukan daidaita ƙasa inda ƙuntatawar sarari ko tsarin shafin ke hana amfani da manyan tsarin hakar. A cikin injiniyan tushe mai zurfi, ana amfani da tafiya frame multi-shaft rigs a matsayin babban kayan aikin gina katanga masu ɗaukar ruwa, katanga masu katsewa, katanga na secant da tangent, da tsarukan haɗa ƙasa. Babban aikace-aikacen su yana haɗa da hakar zurfin birane, gina tashoshin jirgin ƙasa da metro, aikin tushe na gada, da gyaran gine-ginen da aka riga aka gina inda samun dama ya takaita. Tsarin tafiya frame—wani tushe na inji mai motsi da kansa—yana ba da damar rig ya koma kai tsaye a cikin shafin, yana wucewa tsakanin wuraren panel ba tare da buƙatar kayan jawo daban ko hanyoyin aiki masu nauyi ba. Wannan motsi yana da ƙima musamman a cikin wuraren da aka ci gaba sosai inda sararin shafin yake da mahimmanci kuma gine-ginen kusa suna buƙatar ƙaramin girgiza da hayaniya. Ka'idar aiki na tsarin multi-shaft yana amfani da kayan hakar da aka tura a lokaci guda ko a jere ta hanyar ƙarfin hydraulic mai zaman kansa da aka sanya a kan wani tsari na haɗin gwiwa. Kowanne ƙarfin yana samun ƙarfin hydraulic kuma yana iya aiki kai tsaye, yana ba da damar masu aiki su aiwatar da hakar panel a jere tare da ƙaramin lokacin sake saita. Hanyar tafiya—yawanci tana amfani da ƙafafun hydraulic ko tsarin tura—yana tura dukkan rig a hankali zuwa wurin hakar na gaba da zarar an kammala panel. Hakar yana ci gaba ta amfani da augers masu ci gaba, kayan aikin Kelly-type, ko hanyoyin juyawa na casing, dangane da yanayin ƙasa da ƙayyadaddun aikin. Aiki na multi-shaft a lokaci guda yana rage lokacin zagaye da kashi 30–50% idan aka kwatanta da tsarin shaft guda, yana inganta tattalin arziki na aikin a kan manyan kwangiloli na daidaita ƙasa. Rukunin kayan yana ƙunshe da rigs tare da diamita na shaft yawanci yana tsakanin 600 zuwa 1500 mm, tare da zurfin hakar da ya kai 50 zuwa 70 mita. Tsarin sun haɗa da tsarin twin-shaft (matsayi biyu na hakar a lokaci guda) da tsarin triple-shaft (ƙarfin uku masu zaman kansu). Sabbin raka'a suna da kulawa na hydraulic mai ma'auni, kulawa na torque da aka haɗa, da tsarin kulawa na zurfi na atomatik. Ana yawan haɗa tsarin juyawa kai tsaye cikin frame na rig, yana ba da damar gudanar da gudanar da slurry na bentonite ko polymer a cikin lokaci na ainihi ba tare da kayan aikin haɗin gwiwa ba. Ka'idodin zaɓin tafiya frame multi-shaft rigs suna mai da hankali kan buƙatun zurfin hakar, tsarin ƙasa, buƙatun faɗin katanga da tsawo, samun damar shafin, da jadawalin aikin. Mahimman abubuwan yanke shawara sun haɗa da ƙarfin diamita na shaft (dole ne ya dace da ƙayyadaddun faɗin katanga), mafi girman fitar da torque (wanda aka tantance ta ƙarfin ɗaukar ƙasa da buƙatun siminti), ƙarfin jujjuyawar slurry, da tsarin jigilar kaya. Kwangila suna kimanta yanayin ƙasa—musamman ƙarfi da matsin ruwa na ƙasa—don tantance yawan lalacewar kayan yankan da yiwuwar lokacin tsayawa. Ka'idodin da suka dace da waɗannan tsarin sun haɗa da EN 12716 (tsaro na kayan guga), ISO 10937 (ma'anar kayan hakar), da DIN 4120 (hakowa a cikin ƙasa mai haɗin gwiwa). Jagororin CWA na Turai da ƙa'idodin gini na gida suna yawan komawa ga waɗannan ka'idodin don ƙayyadaddun aiki da tsaro. Takardar shaidar kayan aiki a ƙarƙashin ISO 14119 (interlocks da tsarin da suka shafi tsaro) yana zama wajibi a kasuwannin EU.