Cov kev sib txuas

01 Hom thiab kev ua haujlwm ntawm lub nplhaib dai

Lub nplhaib dai muaj peev xwm muab faib ua ib sab caj npab dai thiab ob sab caj npab dai raws li cov qauv. Nws lub luag haujlwm tseem ceeb yog dai lub hanger kom tuav lub laum thaum lub laum raug rub. Xws li DH150, SH250, qhov twg D sawv cev rau ib sab caj npab, S sawv cev rau ob sab caj npab, H sawv cev rau lub nplhaib, 150, 250 sawv cev rau qhov ntsuas ntawm lub nplhaib, chav tsev yog 9.8 × 103N (tf).

Cov kev ceev faj rau kev siv cov nplhaib dai

(1) Lub nplhaib yuav tsum tau siv ua khub, tsis yog siv ua ke, thiab qhov sib txawv ntawm qhov ntev ntawm lub nplhaib tshiab yuav tsum tsis pub tshaj 3 hli; Qhov sib txawv ntawm qhov ntev ntawm ob lub nplhaib uas siv yuav tsum tsis pub tshaj 5 hli (qhov ntev ntawm qhov ntev yog qhov deb ntawm qhov sib cuag ntawm lub pob ntseg sab saud ntawm lub nplhaib thiab lub pob ntseg sab ntawm tus nuv thiab qhov sib cuag ntawm lub pob ntseg qis thiab lub tshuab nqa; Qhov sib txawv ntawm qhov ntev yog qhov sib txawv ntawm qhov ntev ntawm ib khub nplhaib).

(2) Xaiv lub nplhaib tsim nyog raws li qhov yuav tsum tau thauj khoom, thiab txwv tsis pub siv ntau dhau.

(3) Lub nplhaib yuav tsum tsis muaj qhov tawg thiab welds.

(4) Thaum tho qhov, ob lub nplhaib yuav tsum khi ua ke kom tiv thaiv nws kom tsis txhob co thiab ntaus lub qhov dej.

(5) Tom qab kov yeej qhov xwm txheej lossis kev nqa khoom hnyav (ntau dua 1.25 npaug ntawm qhov ntsuas ntawm lub nplhaib dai), nws yuav tsum nres, thiab nws yuav tsum tau kuaj xyuas thiab tshuaj xyuas.

(6) Lub nplhaib dai yuav tsum muaj qee qib ntawm kev ywj pheej ntawm kev viav vias hauv lub pob ntseg hook, thiab qhov tshwm sim ntawm daim npav tsis muaj kev cuam tshuam.

(7) Lub nplhaib hoisting yuav tsum khi rau txoj hlua hlau kev nyab xeeb ntawm tus nuv.