Lub theoretical xam mis ntawm ntauwd crane hlau hlua qauv: hlau hlua txoj kab uas hla X hlau hlua txoj kab uas hla X50÷1000=T.
Tab sis hauv kev ua haujlwm tiag tiag, rau kev nyab xeeb, yog li nws yuav tsum tau muab faib los ntawm 4-8 zaus ntawm kev nyab xeeb, yog tias txoj hlua yog 28, ces 28X28X50÷1000=39.2, qhov no yog qhov kev xav, yog muab faib los ntawm 4 npaug ntawm qhov kev nyab xeeb=9.8T, qhov 9.8T no kuj muaj kev nyab xeeb. Ntauwd cranes siv 35X7 lossis 37X7 multi-strand resistance rotating wire ropes, thiab tseem muaj lwm cov hlua hlau hlua, xws li 6-strand lossis puab 8-strand hlau ropes.
Ntauwd crane hlau hlua yuav tsum ua raws li cov cai hauv qab no:
1. Feem ntau, cov hlua hlau yog qhov txhab nrog ntauwd crane accessories, yog li nws yuav tsis ntswj thiab loosen thaum nqa cov khoom, thiab yuav tsum muaj daim ntawv pov thawj zoo.
2. Cov hlua hlau rau nqa cov hlau liab-kub lossis molten hlau yuav tsum yog cov hlua hluav taws xob tiv taus kub nrog cov tub ntxhais asbestos.
3. Lub hoisting thiab luffing mechanism yuav tsum tsis txhob siv cov hlua hlau nrog ntev braided pob qij txha. Thaum nws yog ib qho tsim nyog los txuas cov hlua hlau kom ntev, nws yog ib qho tsim nyog los xyuas kom meej tias qhov sib koom ua ke muaj zog tsis pub tsawg dua 90% ntawm kev sib tsoo ntawm cov hlua hlau, thiab nws tsis pub nkag mus rau lub nruas los ntawm lub rubey.
