Umgaqo wokusebenza kunye nendlela yokusebenza ye-overshot yefestile

1. Ulwakhiwo lwe-overshot enefestile

Ifestile egqithileyo idityaniswe ngamalungu amabini omzimba wesilinda kunye nejoyini ephezulu (kwakhona uqhagamshelo olunentambo)

Ngokweemfuno zokusindisa, isiphelo esisezantsi se-cylinder sinokwenziwa kwezi zakhiwo zine:

(1) I-spiral semi-oblique cut kulula ukuyijikeleza kwaye yazise intlanzi.

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(3) Intsimbi yomlomo we-cone yangaphakathi ilungele ukwaziswa ngokuthe ngqo kweentlanzi.

(4) Indawo yokusika emile okwelophu Dibanisa ukubamba kunye nefestile engaphezulu kwefestile ukuze unyuse ifuthe lokuloba.

2. Umgaqo wokusebenza we-window overshot

Xa intlanzi ingena kwi-cylinder kwaye ityhala kulwimi lwefestile, ulwimi lwefestile luyanda ngaphandle, amandla alo okubuyisela i-rebound aluma umzimba wentlanzi ngokuqinileyo, kwaye ulwimi lwefestile nalo lugxininisa ngokuqinileyo amanyathelo, oko kukuthi, intlanzi iyabanjwa.

3. Indlela yokusebenza ye-window overshot

(1) Khangela ukuba imisonto okanye iiweld zelungu ngalinye zicocekile kwaye zomelele. Linganisa ukuba ubungakanani bolwimi lwefestile kunye nobuncinci bedayamitha yangaphakathi yendawo evaliweyo inokufanelana nentlanzi, kwaye ugcine umfanekiso wophando olongezelelweyo.

(2)Yomba ezantsi ukuya kwi-2 ~ 3m ngaphezu komphezulu wentlanzi, kwaye uqalise impompo ukuhlamba iqula. Jikelezisa kancinane umtya we-drill ukuwuthoba. Qwalasela utshintsho lwesikali sobunzima kunye nokungena kwesikwere, khumbula ukuchukumisa intlanzi ukuze ungene, kwaye ukhokele isilinda ukungena kwintlanzi.

(3)Qhubeka ukuthoba intambo yokubhola ukwenza intlanzi ingene kumgodi ongaphakathi wombhobho wesixhobo. Ukuba ubude bezinto eziwayo bufutshane, iqula linzulu, kwaye kunzima ukugweba ukungena kwesikwere kunye nokuguqulwa kobunzima bokumiswa, umtya we-drill unokuphakanyiswa ngu-1-2m emva kokuloba enye, kwaye ujikelezwe kwaye ithotyiwe. Phinda amaxesha amaninzi ukuphakamisa i-drill.

(4) Xa uphakamisa i-drill, kufuneka iqhutywe kakuhle. Musa ukuchukumisa intlanzi kwaye ubethe umtya we-drill ngokukhawuleza, ukuze ungagungqi intlanzi kwaye uwele emgodini kwakhona.