Manhole npog tuaj yeem muab faib ua ob hom raws li seb lawv protrude saum qhov chaw qhib tom qab kev teeb tsa: protruding thiab recessed.
1. Protruding Manhole Npog
Hauv kuv lub teb chaws kev lag luam shipbuilding, protruding manhole npog feem ntau muab faib ua peb hom raws li lawv cov qauv: Hom A, Hom B, thiab Hom C.
Hom A manhole npog muaj welded qauv rau lub manhole npog thiab lub nplhaib lub rooj zaum, protruding 100 mm saum lub dav hlau qhib. Kev qhia tshwj xeeb yog raws li qhov dhau los ntawm - qhov loj (L × B): 450 mm × 350 mm, 500 mm × 400 mm, 600 mm × 400 mm, thiab 600 mm × 450 mm. Lub manhole npog thickness (S) yog 4-14 hli. Lub thickness (S) ntawm lub rooj zaum lub nplhaib thiab npog phaj yuav tsum yog 2 hli ntau dua li lub manhole npog thickness.
Hom A manhole npog muaj lub hau npog ntau dua, uas tuaj yeem tiv thaiv cov dej phwj tuaj lossis cov khib nyiab los ntawm kev tuav. Lawv feem ntau siv hauv chav cav, chav boiler, thiab lwm qhov chaw uas muaj dej tsub zuj zuj. Tsis tas li ntawd, Hom A manhole npog tuaj yeem ntsia tau rau ntawm qhov chaw nkhaus, xws li lub hauv paus ntawm lub cylindrical crane lub tog raj kheej lossis qhov chaw ntawm cov qauv kheej kheej.
Hom B manhole npog yog oblong protruding manhole npog. Lub rooj zaum lub nplhaib thickness yog 20 hli, thiab nws feem ntau siv specifications thiab npog thickness yog tib yam li lwm yam manhole npog. Lawv feem ntau siv rau hauv decks, sab hauv pem teb daim hlau, platforms, thiab bulkheads. Thaum siv rau hauv qab ntawm cov khoom thauj, ib lub thav duab steel yog ntxiv nyob ib ncig ntawm lub manhole npog, nrog rau cov hlau los yog ntoo npog phaj, kom maj mam hloov mus rau qhov dej ntws tawm nrog cov ntoo planks.
Hom C manhole npog yog ncig protruding manhole npog. Lub rooj zaum lub nplhaib thickness yog 20 hli, thiab feem ntau siv tshwj xeeb yog Φ450 hli thiab Φ600 hli raws li qhov dhau los ntawm - qhov loj (D). Lub hau phaj thickness (S) yog 4-14 hli. Lawv tuaj yeem siv rau hauv decks, sab hauv pem teb phaj, platforms, thiab ntim khoom.
2. Recessed Manhole Npog
Recessed manhole npog feem ntau siv hauv kuv lub teb chaws kev lag luam nkoj tsim khoom tuaj yeem muab faib ua ob hom raws li lawv cov qauv: Hom D thiab Hom E.
Hom D manhole npog muaj cov phaj npog, thiab cov kev qhia tshwj xeeb raws li qhov dhau los ntawm - qhov loj (L × B) yog 530 mm × 430 mm, 630 mm × 430 mm, thiab 630 mm × 480 mm. Lub hau phaj thickness (S) yog 10 hli thiab 12 hli.
Hom E manhole npog muaj qhov tshwj xeeb zoo ib yam li Hom D, tab sis lawv cov phaj tuab (S) yog 14 hli thiab 18 hli.
Ob hom D thiab Hom E manhole npog tuaj yeem siv rau hauv cov cheeb tsam uas xav tau lub tiaj tus cargo tuav hauv qab thiab lawj txoj hauv kev rau kev thauj khoom thauj / tshem tawm thiab cov neeg ua haujlwm txav.
