Selelekela
Ho robeha ha thapo ea terata ea tšepe ke e 'ngoe ea lintlha tsa bohlokoahali tsa boenjiniere ba ho rigging. Ho utloisisa mokhoa oa ho e bala ka nepo ho netefatsa ts'ebetso e bolokehileng ea ho phahamisa le ho latela maemo a indasteri joalo ka ISO 2408 le EN 12385.
Breaking Load ke Eng?
Breaking load, eo hape e tsejoang e le minimum breaking force (MBF), ke matla a maholo ao thapo e ka mamellang pele a hloleha. Hangata e hlalosoa ka kilonewtons (kN) kapa tonnes (t).
Lintlha Tse Ka Sehloohong Tse Amang Ho Roala Moroalo
- Matla a Tensile:Ka tloaelo ho tloha ho 1570 N/mm² ho isa ho 2160 N/mm².
- Kaho ea Liropo:Palo ea likhoele, likhoele ka khoele, le mofuta oa mantlha li ama matla a ho robeha.
- Tlatsa Factor:Karolelano ea sebaka sa metallic cross{0}sectional ho ea sebakeng se selikalikoeng sa thapo.
- Ntho e Lahlehang ea Spinning:Litlaleho tsa phokotso ea matla ka lebaka la mehala ea helical.
Foromo ea ho Roala Moroalo
Theoretical breaking load F e ka baloa e le:
F = K × d² × R₀ / 1000
Moo:
- F= Bonyane bo tlase ba ho robeha (kN)
- K= Epirical factor ho itshetlehile ka kaho ya thapo (hangata 0.3–0.55)
- d= Bophara ba thapo (mm)
- R₀= Matla a matle a maele (N/mm²)
Mohlala o Sebetsang
Bakeng sa bophara ba 20mm 6×36WS-IWRC thapo ea tšepe ea tšepe e nang le kereiti ea 1960 N/mm²:
F=0.40 × 20² × 1960 / 1000=313.6 kN (hoo e ka bang lithane tse 32)
Mehopolo ea Tšireletseho
Kamehla sebelisa ntlha ea tšireletso (hangata 5:1 bakeng sa ho phahamisa ka kakaretso, ho fihla ho 10:1 bakeng sa ho phahamisa basebetsi) ha ho khethoa moeli oa mojaro oa ho sebetsa (WLL).
Qetello
Palo e nepahetseng ea mojaro oa ho robeha ke ea bohlokoa mekhoeng e sireletsehileng ea ho qhekella. Kamehla bua ka litlhaloso tsa moetsi le maemo a amehang ha u khetha matla a lithapo.
