| Isimo sesicelo | fs | fL | Ngokwesisekelo, umthwalo omkhulu we-static ukuthiukuthwala okubuthayoUkuxhaswa kumele kusetshenziswe njengenani lokuhlanganisa, okumele kufake umthwalo owengeziwe nomthwalo wokuhlola. Akufakiwe kuhlelo lokusebenza etafuleni, i-Static Safety Factor FS FS ingakhethwa ngokubhekisele ezimweni zokusebenza ezifanayo zokusebenza kanye nezicelo etafuleni. MF = Ukubuyisela emuva isikhathi sokubhidliza emthwalweni ongenalutho M = Umzuzu wokubhidliza we-amplitude ephezulu usetshenziselwa uhlelo lokusebenza lwe-Static Safety Coefficial FS ukuthatha u-1.45, ngenxa yemithwalo ephakathi nendawo kanye nezimo zokusebenza ezisindayo, kungcono ukukhetha ukugibela umugqa owodwaukuthwala okubuthayo. | |||
| I-Floating Crane (Cargo) | 1.10 | 1.0 | ||||
| I-Crane yeselula (Cargo) | ||||||
| I-Marine Deck Crane | ||||||
| Imishini yokushiswa | ||||||
| Ithebula (ukusebenza okuqhubekayo) | ||||||
| Tower crane | * Ukujikeleza phezulu phezulu | Mf≤0.5m | I-1.25 | 1.0 | ||
| 0.5m≤mf≤0.8m | 1.15 | |||||
| Mf≥0.8m | I-1.25 | |||||
| ukujikeleza esisekelweni | 1.0 | |||||
| Ukujikeleza Crane (umthwalo wempahla) | 1.15 | |||||
| Ukuthumela i-crane | ||||||
| l Umkhumbi olayisha / WELYLER | ||||||
| Umshini we-metallurgical ngokweqile | 1.45 ** | 1.5 | ||||
| I-Crane ephathekayo (Grab noma baphathe umsebenzi osindayo) | 1.7 | |||||
| Ukujikeleza kwe-crane (ukubamba noma ukuncela) | ||||||
| Bridge Crane (Grab noma Sucker) | ||||||
| I-Floating Crane (Grab noma Sucker) | ||||||
| 2.15 | |||||
| I-Stacker-Reclamputer | ||||||
| I-Cantilevereved Conveyor | ||||||
| Umshini We-Offshore Offweight | Indinganiso ekhethekile | Kulezi zicelo, izimo zokusebenza ziyehluka kakhulu, njengokusekelwa okujikelezayo okusetshenziselwa ukujikeleza okungajwayelekile, isheke le-tuli kuphela. Ngokusekelwa okujikelezayo okusetshenziselwa ukujikeleza okuqhubekayo nokujikeleza kwamanye isikhathi, ukubalwa kwempilo okunamandla kuyadingeka. | ||||
| Crane Railway Crane | 1.00 | |||||
| I-Deck Crane (umthwalo wezimoto) | ||||||
| -Ngabaza | 1.10 | |||||
| Ukulethwa inqola | ||||||
| Ukwevalwa kwezintambo / Ibhakethi Yekhebula | I-1.25 | |||||
| Ngaphansi noma okulingana no-1.5 m3 m3 hydraulic umgubuli | 1.45 | |||||
| Ngaphezu kwe-1.5 m3 m3 m3 m3 hydraulic umgodi | Indinganiso ekhethekile | |||||
| I-Ladle Turret | 1.75 | |||||
QAPHELA: I-FL yiyona eguquguqukayo yezokuphepha. Kufanele isetshenziswe ngokuhlanganiswa ne-Dynamic Load Curve. Kutholakala ngokuhlangenwe nakho nokuhlolwa. Kuyinani lesethenjwa elisuselwa kumthwalo omkhulu wokusebenza.
Isibonelo: Umdwebo we-portal crane
Indlela yokubala yomthwalo omkhulu inconyelwe kanjena:
Ngaphambi kokukhetha ukwesekwa okujikelezayo, isici sokuphepha se-static FS okufanele sibhekwe ukuthi umgcini kufanele anqunywe, angatholakala kuHlelo 1. I-Portal Crane: FS = 1.45
Lapho umthwalo omkhulu we-static waziwa, ifomula yokubala yomthwalo wayo ngale ndlela elandelayo:
1) Umthwalo omkhulu wokusebenza wamandla aphezulu womoya
axial Force fa = Q + A + o + g
Ukuguga kwe-MEMOMS MI = Q × lmax + a
2) Akunandaba noma amandla omoya, cabanga ngomthwalo we-25% lokuhlola umthwalo wokuhlola
axial Force fa = 1.25 × Q + A + o + g
Sound Sound m = 1.25 × Q × lmax + i-a timax - o × O - g ×
Isibonelo: Umthwalo osebenzayo kanye nokuphakama kwe-clamshell port kwaziwa ngokulandelayo:
Q = 260 kn lmax = 23 m 1max = 23m
A = 75 knmax = 11 m amax = 11m
O = 450 kn o = 0.75 m o = 0.75m
G = 900 Kn g = 3 m g = 3m
W = 27 kn = 6.5 m1) r = 6.5m
Umthwalo omkhulu wokusebenza wamandla omoya ku-Level 8
Fa = q + a + o + g
= 260 + 75 + 450 + 900
= 1685 kn
M = Q × lmax + a × amax + w × r - o × o - g × g
= 260 × 11 + 27 × 6.5 × 450 × 0.75 × 900 × 3
= 3943 KNM
2) Akunandaba namandla womoya, cabanga ngomthwalo omkhulu wokusebenza womthwalo wokuhlola angama-25%
Fa = 1.25 × Q + A + o + g
= 325 +75 +450 +900
= 1750kn
M = 1.25 x × lmax + i-aintix - o × O - g × g
= 325 × 23 × 11 × 45 × 0.75 × 900 × 3
= 5566.3 kn
3) Umthwalo omkhulu wokusebenza kungakhathalekile amandla omoya
Fa = 1685 kn
M = Q × lmax + i-a timex - o × o - g × g
= 260 × 23 23 × 11 × 450 × 0.75 × 900 × 3
= 3767.5
Isimo sokulayisha 2 sisetshenziswa njengomthwalo osebenzayo wokubalwa kwe-static
Ngokwesheduli 1, i-portal crane (BUBHET GRUBE) kufanele isekwe yimigqa emithathu yokuxhaswa kwe-roller-hlobo rotary
I-Static Reference Load yokuxhaswa okujikelezayo yile:
Fa '= 1750 kn × 1.4 = 2537.5 kn m' = 5566.3 knm × 1.45 = 8071.1
Umthwalo wokubala weBolt ngu:
Fa = 1750n m = 5566.3
Ngokusho kwemiphumela yokubala engenhla, ukukhethwa kwamandla wethamo le-bearing kungazimisela ukukhetha ukwesekwa okujikelezayo kwe-13 * .45.2000.002
Lencazelo engenhla iyindlela yokubala eningiliziwe yeukuthwala okubuthayousayizi. Ngokwemiphumela yokubala, ungakhetha okufaneleukuthwala okubuthayoimodeli yethuIkhathalogi Yomkhiqizo. Uma ungazi ukuthi ubala kanjani, sicela ukhululeke ukuxhumana nathi nge-imeyili. Sizokusiza ngenhliziyo yonke!
Isikhathi Sokuthumela: APR-08-2021