Esi sigqoko sokhuseleko esithengiswa kwimarike yethu yokukhusela abasebenzi, kunye namaxabiso avela kwi-3-15 yuan. Ngaba iyahlangabezana neemfuno zomgangatho kunye nokusebenza kwesigcina-ntloko sokhuseleko? I-GB2811-2019 Izigcina-ntloko zokukhusela ii-helmets zifuna ukuba ii-helmets eziqhelekileyo zifakwe kwimpembelelo yempembelelo, ukuxhathisa i-puncture, kunye neemvavanyo zamandla e-chin strap kunye nokuhlangabezana neemfuno.
Ukusebenzisa isando sokuwisa i-5kg, impembelelo yesigcina-ntloko sokhuseleko ukusuka kubude bemitha ye-1, kwaye amandla adluliselwe kwi-mold yentloko akufanele idlule i-4900N. Kufuneka kungabikho amaqhekeza awela kwiqokobhe lesigcina-ntloko. Intloko yehamile i-hemispherical, kunye ne-radius ye-48mm, eyenziwe nge-45 # yentsimbi, kwaye inesimo esilinganayo kunye nesifanayo. Kutheni ingenakudlula kwi-4900N?
I-4900N (i-Newton) yiyunithi yamandla, elingana neekhilogram ezingama-500 zamandla (kgf).
Ubukhulu balo mandla bukhulu kakhulu, kwaye ukuba busetyenziswa ngokuthe ngqo entloko yomntu, kunokubangela ukwenzakala okukhulu. Ngokutsho kweziphumo zophando, umgangatho woyilo lwee-helmets zokhuseleko zifuna ukuba zingonakaliswa phantsi kwempembelelo yempembelelo ye-4900N ukukhusela intloko kwingozi.
Oku kungenxa yokuba amandla amaninzi kumqolo wesibeleko somntu yi-4900N, kwaye ukugqithisa le xabiso lamandla kunokukhokelela ekulimazeni komlomo wesibeleko okanye ezinye iziphumo ezibi. Ngaphandle kokukhuselwa kwesigcina-ntloko sokhuseleko, ukuba i-force ye-4900N isetyenziswe ngokuthe ngqo kwintloko yomntu, inokubangela ukuphuka kwekhanda, ukungqubuzana, okanye umonakalo omkhulu wobuchopho, ukubeka ubomi engozini.
Ngoko ke, izigcina-ntloko zokhuseleko zibaluleke kakhulu izixhobo zokukhusela zomntu kwindawo yokusebenza, ngakumbi kwiimeko apho kukho umngcipheko wokuwa kwezinto.
Ukuqonda ngcono ubukhulu bamandla e-4900N, inokuthelekiswa nokuguqula iiyunithi zamandla. Umzekelo, u-1 Newton ulingana no-0.102 kilogram force.
Ngoko ke i-4900N ilingana neekhilogram ezingama-500 zamandla, ezilingana nomxhuzulane wesiqingatha seetoni (500 kilograms) into.
Isishwankathelo, i-4900N ingamandla amakhulu kakhulu, ukuba isetyenziswe ngokuthe ngqo kwintloko yomntu, inokubangela ukulimala okubulalayo. Kungeso sizathu le nto izigcina-ntloko zokhuseleko kufuneka zibe nemigangatho engqongqo yokuqinisekisa ukuba zinokukhusela ukhuseleko lwalowo uzinxibileyo xa ziphantsi kwezo mpembelelo zamandla.
Sebenzisa isando sentsimbi enobunzima obuyi-3kg ukuwisa ngokukhululekileyo kwaye ugqobhoze isigcina-ntloko sokhuseleko ukusuka kubude bemitha enye. I-cone yensimbi akufanele ichukumise umphezulu we-mold yentloko, kwaye igobolondo le-cap akufanele libe naziphi na iziqhekeza eziwayo. Icone yentsimbi yenziwe nge-45 # yentsimbi kwaye inobunzima be-3kg. Inxalenye yokugqobhoza ine-engile ye-cone ye-60 °, i-cone tip radius ye-0.5mm, ubude obuyi-40mm, ubuninzi be-diameter ye-28mm, kunye nobunzima be-HRC45.
Ixabiso lamandla xa umtya we-chin wonakaliswe kumzobo oguquguqukayo wokufunxa impembelelo kunye novavanyo lokumelana ne-puncture kufuneka lube phakathi kwe-150N kunye ne-250N. Izigqoko ezikhethekileyo zokhuseleko nazo zifuna iimfuno ezikhethekileyo zokusebenza: ukuqina kwecala
Beka isigcina-ntloko sokhuseleko kwicala phakathi kwamacwecwe amabini acwecwe, kunye ne-brim ngaphandle kwaye ngokusondeleyo kwi-plate ngokusemandleni: umatshini wokuvavanya usebenzisa uxinzelelo kwi-helmet yokukhusela ngeplate, kwaye ukuguqulwa okuphezulu akufanele kudlule i-40mm, i-deformation eseleyo kufuneka isebenze. ungadluli kwi-15mm, kwaye akufuneki kubekho inkunkuma ewayo kwiqokobhe lesigcina-ntloko.
Umbhobho wejethi wejethi weshishini wemethane utshiza ngokuzinzileyo idangatye elibhlowu elinobude obuyi-50mm. Ilangatye lisebenza kwiqokobhe le-cap imizuzwana eyi-10 kwaye ixesha lokucima akufanele lidlule imizuzwana emi-5. Iqokobhe le-cap akufuneki litshise.
Ukongeza, kukho iimfuno zokuxhathisa ubushushu obuphantsi, ukumelana nobushushu obuphezulu, ukusebenza kombane, ukusebenza kwe-anti-static, kunye nokuchasana nokutshizwa kwentsimbi etyhidiweyo.
Ixesha lokuposa: Aug-21-2024