He aha ka 7:1 Safety Factor a no ke aha ia mea?

Koho ka luna hoʻoponopono liʻiliʻi i a ʻO ka maʻa hāpai  i helu ʻia no 2 tons. He 1.5 tons ke kaumaha o ka ukana—ma loko o ka palena. Akā he aha ka hopena inā hoʻouka ʻia ka maʻa? Pehea inā kuhi hewa ʻia ka ukana? He aha inā ua hoʻonāwaliwali ka pōʻino o ke kaiapuni i nā fiber? ʻO kahi maʻa me kahi kumu palekana 7: 1 e hāʻawi i kahi pale koʻikoʻi no kēia mau kūlana ʻike ʻole.

 

Ua hana ʻo Lishenflex  i nā maʻa synthetic lifting slings no ʻelua mau makahiki, a ʻo kekahi nīnau a mākou e lohe pinepine ai mai nā mea hoʻohana hope ʻo ia: He aha ke ʻano o kēlā helu 7:1 ma ka hōʻailona? He mea koʻikoʻi ka pane i ka hoʻopalekana palekana—a hoʻomaopopo pinepine ʻia.

 

Palekana Palekana vs. Palena Haawe Hana: Hoʻomaopopo i ka ʻokoʻa

No ka hoʻomaopopo ʻana i ke kumu palekana 7:1, pono ʻoe e hoʻokaʻawale ma waena o ʻelua mau huaʻōlelo nui: Working Load Limit (WLL) a me Breaking Strength  (i kapa ʻia ʻo Minimum Breaking Load a i ʻole MBL) .

 

Wahi a ke alakaʻi ʻo Hercules Lifting , ua hoʻoholo ʻia ka pilina ma waena o kēia mau waiwai ʻelua e ke kumu hoʻolālā: WLL = Breaking Strength ÷ Design Factor .

 

ʻO ke kumu palekana 7:1  ʻo ia hoʻi ʻo ka ikaika o ka haki ʻana o ka maʻa he ʻehiku paʻi o kona WLL. No ka maʻa WLL 1-toni, ʻo ka ikaika haʻihaʻi ma kahi o 7 mau tona. E like me ka wehewehe ʻana i nā kūlana ʻoihana me ʻO EN 1492-1 a me EN 1492-2 , ʻo kēia ratio ka palena haʻahaʻa loa no nā maʻa synthetic.

No ke aha ʻo 7:1 no nā maʻa hoʻāla ʻana?

Hoʻohana nā ʻano mea hana like ʻole i nā kumu palekana like ʻole:

 

Pono nā maʻa fiber synthetic i kahi kumu palekana ʻoi aku ka kiʻekiʻe ma mua o ke kaula uea a i ʻole ke kaulahao no ka mea ʻoi aku ka maʻalahi o nā mea kaiapuni e hiki ke hoʻohaʻahaʻa i ka ikaika me ka ʻike ʻole ʻia.

 

Wahi a WorkSafe WA's Mines Safety Bulletin No. 155 , ʻoi aku ka maʻalahi o nā maʻa pōʻai synthetic i ka pōʻino kino, ka lā (ultraviolet), nā kemika, a me ka wela nui ma mua o nā ʻano mea hāpai ʻē aʻe. Hāʻawi ka mea 7: 1 i kahi pale e kū'ē i kēia mau kūlana honua maoli ʻole.

 

E like me ka Lifting Gear Direct  i kā lākou alakaʻi huahana, ua koi nā hoʻololi ʻoihana hou i kekahi mau ʻano o nā maʻa hāpai e loaʻa kahi mea palekana 7: 1 ma mua o ka ratio 5: 1 kahiko-ʻo ia hoʻi he haʻahaʻa haʻahaʻa haʻahaʻa o nā maʻa i ʻehiku mau manawa o kā lākou WLL.

 

Ka Waiwai Maoli o ka 7: 1

ʻAʻole kūʻokoʻa ka helu 7: 1. He helu no:

 

Hoʻouka haʻalulu —noi hoʻouka koke a hoʻokuʻu paha

 

ʻO ka neʻe ʻana i ka ikaika — ke koli a i ʻole ka neʻe ʻana i ka wā hāpai

 

Ka pōʻino o ke kaiapuni —UV, kemika, a i ʻole ka wela i ka wā

 

ʻO ka ʻaʻahu a me ka haehae — ʻā, ʻokiʻoki, a me ka pōʻino o ka ʻaoʻao

 

ʻO nā kumu kihi — hoʻemi i ka hiki ke hoʻoemi ʻia i nā ʻeke a i ʻole nā ​​hiʻi hīnaʻi

 

ʻO ka ʻae ʻana i ka hana ʻana - nā ʻano like ʻole o nā mea a me ke kūkulu ʻana

 

Wahi a CERTEX Denmark , ʻoi aku ka maʻalahi o nā maʻa lole synthetic i nā ʻaoʻao ʻoi, ʻaʻahu a me ka friction, ʻoki a me nā waimaka, ka wela ma luna o nā palena wela i ʻae ʻia, nā kemika like ʻole, a me ka ʻike ʻana o UV i ka manawa. Hāʻawi ka mea palekana 7: 1 i kahi palena no kēia mau nāwaliwali, e hōʻoia ana i ka maʻa i hoʻohaʻahaʻa ʻia e ka pōʻino o ke kaiapuni liʻiliʻi hiki ke loaʻa ka ikaika i koe e mālama pono i kāna ukana helu.

 

Ua hōʻoia ka hoʻāʻo ʻana o Lishenflex a hiki i ka ʻoki ʻana he 10% ka ʻaoʻao - hiki ke ʻike ʻia i ka hoʻohana mua wikiwiki ʻana - hiki ke hōʻemi i ka hiki ke maʻa ma 35%. ʻO ka helu 7: 1 e hōʻoia i ka maʻa me ka pōʻino liʻiliʻi e paʻa mau ka ikaika e hāpai i kāna ukana helu. ʻO kēia ke kumu ʻaʻole ʻo ke kumu palekana kiʻekiʻe he koi hoʻokō wale nō - he mea pono pono.

 

Pehea e ʻike ʻia ai ka 7:1 Safety Factor i ka hoʻomaʻamaʻa

Ma lalo o EN 1492-1 a me EN 1492-2, ua hui pū ʻia ka mea palekana 7:1 me nā hōʻailona hiki ke hoʻololi i ka kala:

 

Puna: EN 1492-1/2 mau kala kala kala

 

Ua ʻōlelo ʻo DIN EN 1492-2,  pono e loaʻa i nā maʻa pōʻai kahi kumu palekana kiʻekiʻe o 7: 1, ʻo ia ka WLL o 1000 kg e pili ana i kahi haʻahaʻa o 7000 kg. Hōʻoia ka kikoʻī o ka huahana SpanSet ua hana ʻia kā lākou mau maʻa pūnaewele palahalaha me kahi mea palekana 7: 1, me kēlā me kēia huahana i hāʻawi ʻia me ka palapala hōʻoia a me ka helu serial kūikawā no ka traceability.

 

Nā Kūlana e kauoha ai 7:1

ʻO ke kumu palekana 7: 1 ua kauoha ʻia e nā kūlana honua he nui no nā maʻa synthetic:

 

Ua hōʻoia ʻo WorkSafe WA  no nā maʻa maʻa polyester i hoʻokō me AS 4497:2018, ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa he ʻehiku manawa i kā lākou WLL , a ua hoʻouka paʻa ʻia lākou i ʻelua manawa o kā lākou WLL.

 

Hōʻuluʻulu a me nā Manaʻo Hoʻomaʻamaʻa

ʻO ka mea palekana 7: 1  kahi mea hoʻolālā koʻikoʻi e hāʻawi i kahi palena palekana ma waena o ka ikaika haki o ka maʻa hāpai a me kāna palena haʻahaʻa hana. ʻO kēia kumu no nā kūlana o ka honua maoli - ka hoʻouka ʻana i ka haʻalulu, ka pōʻino o ke kaiapuni, ka ʻaʻahu, a me nā kumu kihi - hiki ke hoʻololi i ka ikaika o ka maʻa.

 

Nā mea nui e lawe ai:

 

1.7:1 ua kauoha ʻia e EN 1492-1/2 a me AS 4497:2018  no nā maʻa synthetic.

 

2. ʻAʻole nahā ka ikaika o WLL — mai hoʻohana i ka ikaika haʻihaʻi ma ke ʻano he palena hana

 

3. ʻO ke kumu palekana kiʻekiʻe no ka synthetics ma muli o ko lākou nāwaliwali  i ka UV, ka wela, nā kemika, a me nā pōʻino kino.

 

4. E nānā mau i ka hōʻailona maʻa - hōʻike ia i ka WLL a me ka mea palekana

 

5. E nānā mau - ʻo ka helu 7: 1 he pale, ʻaʻole ia he pani no ka mālama pono

 

Hana ʻo Lishenflex  i nā maʻa hoʻokiʻekiʻe synthetic me kahi mea palekana 7: 1, e like me nā kūlana EN 1492-1 a me EN 1492-2. Hōʻike kā mākou huahana i nā hōʻailona hiki ke kala kala ʻia, nā helu serial kūikawā no ka traceability, a ua hoʻouka ʻia e hōʻoia i ka hilinaʻi.

 

Inā makemake ʻoe i ke kōkua no ka hoʻomaopopo ʻana i nā koi kumu palekana no kāu mau hana hoʻokiʻekiʻe kikoʻī—a i ʻole makemake i kōkua no ka hōʻoia ʻana ua kūpono kāu maʻa i nā kūlana kūpono—e ʻoluʻolu e hoʻouna i leka uila i sales@lishenflex.com , a e hāʻawi kā mākou hui loea i ke kākoʻo hoʻokahi.