Choponyera chathyathyathya pamapangidwe a choke hitch chimapereka chitetezo chogwira akatundu omwe amatha kutsetsereka pokwera molunjika. Koma kodi gulayeni iliyonse ingagwiritsidwe ntchito motere? Yankho lalifupi ndi inde-koma ndi kuchepetsa kwambiri mphamvu ndi malamulo okhwima ogwiritsira ntchito. Malinga ndi EN 1492-1 ndi ASME B30.9, kugunda kwapang'onopang'ono kumachepetsa malire a ntchito ya gulaye mpaka 80% ya mphamvu yake yokhotakhota, ndikuchepetsanso ma angles ochepera 120 ° pamalo otsamwa. Bukuli limafotokoza za kuthekera, njira yoyenera yotsamwitsa, mikhalidwe yomwe imaletsa kutsamwitsidwa, ndi zowunikira zofunikira kuti zitsimikizire kuti zikugwira ntchito bwino.

Chovala chonyamulira chomwe chasiya mtundu wake wakale chimakhala chofala kwambiri pamalo ogwirira ntchito. Ogwiritsa ntchito ambiri amadzifunsa kuti: Kodi akadali otetezeka kugwiritsa ntchito? Yankho lalifupi-malinga ndi miyezo yamakampani-ndi ayi. Kutsika kwamtundu ndi chizindikiro chowonekera cha kuwonongeka kwa ultraviolet (UV), zomwe zimafooketsa ulusi wopangidwa ndikusokoneza mphamvu ya gulaye yonyamula katundu. Bukhuli likuwunika zomwe mtundu wosweka umatanthauza chitetezo cha gulaye, momwe mungasiyanitsire kuwonongeka kwa UV ndi mitundu ina ya kusinthika, ndi njira zopuma pantchito zomwe zafotokozedwa mu ASME B30.9 ndi Washington Administrative Code (WAC). Kwa oyang'anira mbeta ndi akatswiri achitetezo, kumvetsetsa tanthauzo la gulayeni yozimiririka ndikofunikira kuti mupewe kulephera koopsa.

Gombe lathyathyathya ndi chimodzi mwa zida zosunthika kwambiri pakuwongolera kulikonse. Koma zikafika posankha kasinthidwe koyenera, kusankha pakati pa diso & diso ndi ma slings osatha amatha kukhudza kwambiri chitetezo komanso kuchita bwino. Zovala zamaso ndi diso zimakhala ndi malekezero osokedwa kuti alumikizane mwachangu, pomwe ma slings osatha amapanga lupu losasunthika lomwe limatha kuzunguliridwa kuti ligawidwe. Bukuli likufotokoza kusiyana kwa kamangidwe, ubwino wa kagwiritsidwe ntchito, ndi njira zosankhira zamtundu uliwonse, kutengera miyezo yamakampani kuphatikiza ASME B30.9 ndi EN 1492-1 kukuthandizani kupanga chisankho mwanzeru.

Choponyera chonyamulira chomwe chaposa moyo wake wotetezedwa ndi ngozi, osati chida. Komabe akatswiri ambiri ozembera amavutika ndi funso losavuta: kodi ndiyenera kubweza kangati ma slings anga onyamulira? Yankho si nambala imodzi. Zimatengera mtundu wazinthu, kuchuluka kwa kagwiritsidwe ntchito, momwe amagwirira ntchito, ndi zomwe amayendera. Bukuli likutengera miyezo yamakampani (ASME B30.9, EN 1492), malangizo opanga, ndi luso la Lishenflex popanga kuti apereke njira zomveka zosinthira. Timasamalira moyo wautumiki womwe tikuyembekezeka potengera mtundu wa gulaye, kuchuluka kwa zoyendera, zikwangwani zopuma pantchito, komanso kusiyana kwakukulu pakati pa 'kutengera zaka' ndi 'kutengera momwe zinthu ziliri'.

Lamba wonyamulira amene amasamalidwa bwino angapereke zaka zambiri za utumiki wodalirika, pamene amene anyalanyazidwa angalephere msanga—kaŵirikaŵiri popanda chenjezo looneka. Bukuli limatengera miyezo yamakampani (EN 1492, ASME B30.9) ndi zomwe Dongfang Lishen adakumana nazo kuti apereke ndondomeko yokwanira yokonza ma slings opangira.

Ma slings osunthika osunthika, ngati chida chofunikira chonyamulira, amakhala ndi ntchito zambiri m'magawo angapo monga kupanga mafakitale, mayendedwe azinthu, ndi zomangamanga. Chifukwa cha kufewa kwake, kupepuka komanso kusuntha, masing'ono osunthika osunthika amayamikiridwa ndi mafakitale ambiri. Komabe, posakhalitsa