Dab tsi yog qhov 7: 1 Kev Nyab Xeeb Kev Nyab Xeeb thiab Vim Li Cas Nws Tseem Ceeb?

Tus thawj saib xyuas rigging xaiv a lifting sling  ntsuas rau 2 tons. Lub load hnyav 1.5 tons - zoo nyob rau hauv qhov txwv. Tab sis yuav ua li cas yog tias lub sling yog shock-loaded? Yuav ua li cas yog hais tias lub load yog misjudged? Yuav ua li cas yog hais tias ib puag ncig degradation tau tsis muaj zog fibers? Ib txoj hlua nrog 7: 1 qhov kev nyab xeeb muab qhov tseem ceeb tsis txaus rau cov xwm txheej tsis tuaj yeem pom.

 

Lishenflex  tau tsim cov hlua khi hlua khi rau ntau tshaj ob xyoo lawm, thiab ib lo lus nug uas peb hnov ​​​​ntau zaus los ntawm cov neeg siv kawg yog: Qhov 7: 1 tus lej ntawm daim ntawv txhais tau li cas? Cov lus teb yog qhov tseem ceeb rau kev ruaj ntseg rigging - thiab nws feem ntau to taub yuam kev.

 

Safety Factor vs. Working Load Limit: To taub qhov txawv

Txhawm rau nkag siab txog 7: 1 kev nyab xeeb, koj yuav tsum xub paub qhov txawv ntawm ob lub ntsiab lus tseem ceeb: Ua Haujlwm Load Limit (WLL) thiab Breaking Strength  (tseem hu ua Yam Tsawg Tshaj Tawm lossis MBL).

 

Raws li Hercules Lifting phau ntawv qhia , kev sib raug zoo ntawm ob qhov tseem ceeb no yog txiav txim siab los ntawm tus qauv tsim: WLL = Breaking Strength ÷ Design Factor .

 

A 7: 1 qhov kev nyab xeeb  txhais tau tias lub sling lub zog tawg yog xya npaug ntawm nws WLL. Rau 1-tuj WLL sling, lub zog tawg yog tsawg kawg yog 7 tons. Raws li tau hais hauv cov qauv kev lag luam suav nrog TS EN 1492-1 thiab EN 1492-2 , qhov sib piv no yog qhov yuav tsum tau ua yam tsawg kawg nkaus rau cov hlua khi hluavtaws.

Vim li cas 7: 1 rau Synthetic Lifting Slings?

Cov khoom siv sib txawv siv ntau yam kev nyab xeeb:

 

Synthetic fiber ntau slings yuav tsum muaj kev ruaj ntseg ntau dua li cov hlua hlau los yog cov saw hlau vim tias lawv muaj kev cuam tshuam ntau dua rau ib puag ncig uas tuaj yeem ua rau lub zog tsis muaj kev ceeb toom.

 

Raws li WorkSafe WA's Mines Safety Bulletin No. 155 , hluavtaws puag ncig slings yog qhov yooj yim rau kev puas tsuaj rau lub cev, hnub ci (ultraviolet), tshuaj lom neeg, thiab kub ntau dua li lwm hom lifting iav. Qhov 7: 1 yam muab qhov tsis sib xws rau cov xwm txheej tiag tiag hauv ntiaj teb no.

 

Raws li Lifting Gear Direct  sau tseg hauv lawv cov khoom qhia, cov kev hloov pauv tsis ntev los no tau xav tau qee yam kev nqa cov hlua kom muaj kev nyab xeeb 7: 1 es tsis yog qhov qub 5: 1 piv - txhais tau tias cov hlua tam sim no muaj qhov tsawg kawg nkaus ntawm xya npaug ntawm lawv WLL.

 

Tus nqi tiag tiag hauv ntiaj teb ntawm 7: 1 Kev Nyab Xeeb Kev Nyab Xeeb

Qhov 7: 1 yam tsis yog arbitrary. Nws suav rau:

 

Shock loading - sudden load daim ntawv thov lossis tso tawm

 

Dynamic txav - viav vias lossis hloov thaum nqa

 

Ib puag ncig kev puas tsuaj - UV, tshuaj lom neeg, lossis kub kub puas thaum lub sijhawm

 

Hnav thiab tsim kua muag - abrasion, txiav, thiab ntug puas

 

Lub kaum sab xis - txo qhov muaj peev xwm ntawm choke lossis pob tawb hitches

 

Manufacturing kam rau ua - variations ntawm cov khoom thiab kev tsim kho

 

Raws li CERTEX Denmark , cov khoom siv hluavtaws hluavtaws tshwj xeeb yog cov npoo ntse, hnav thiab kev sib txhuam, kev txiav thiab kua muag, kub siab tshaj qhov ntsuas kub, cov tshuaj tsis sib haum, thiab UV raug lub sijhawm. Lub 7: 1 kev nyab xeeb qhov tseem ceeb muab cov npoo rau cov qhov tsis zoo no, ua kom ntseeg tau tias cov hlua khi uas raug cuam tshuam los ntawm kev puas tsuaj ib puag ncig me me tseem yuav muaj lub zog seem txaus los tuav nws cov khoom ntsuas kom nyab xeeb.

 

Lishenflex 's kev sim kuaj pom tseeb tias txawm tias 10% ntug txiav - uas tej zaum yuav plam hauv kev kuaj xyuas ua ntej siv ceev - tuaj yeem txo qhov peev xwm ntawm 35%. Qhov 7: 1 yam ua kom ntseeg tau tias txoj hlua nrog kev puas tsuaj me tseem tuaj yeem khaws lub zog txaus los nqa nws cov khoom ntsuas. Qhov no yog vim li cas qhov kev nyab xeeb siab dua tsis yog qhov yuav tsum tau ua raws nkaus xwb - nws yog qhov tsim nyog siv tau.

 

Yuav ua li cas 7: 1 Kev Nyab Xeeb Kev Nyab Xeeb tshwm sim hauv kev xyaum

Raws li EN 1492-1 thiab EN 1492-2, 7: 1 kev nyab xeeb yog ua ke nrog cov cim xim muaj peev xwm:

 

Tau qhov twg los: EN 1492-1 / 2 xim-code qauv

 

DIN EN 1492-2  hais tias puag ncig slings yuav tsum muaj kev nyab xeeb siab ntawm 7: 1, lub ntsiab lus ntawm WLL ntawm 1000 kg sib raug rau qhov hnyav ntawm 7000 kg. Cov khoom lag luam SpanSet tau lees paub tias lawv cov webbing slings yog tsim nrog 7: 1 kev nyab xeeb, nrog rau txhua yam khoom muab nrog daim ntawv pov thawj ntawm kev ua raws thiab tus lej cim rau kev taug qab.

 

Cov Txheej Txheem Ua Haujlwm 7: 1

Lub 7: 1 kev nyab xeeb yam yog yuam los ntawm ntau yam thoob ntiaj teb cov qauv rau hluavtaws slings:

 

WorkSafe WA  lees paub tias rau polyester puag ncig slings ua raws li AS 4497: 2018, qhov tsawg kawg nkaus tawg load yog xya npaug ntawm lawv WLL , thiab lawv yog ib tus neeg pov thawj-loaded rau ob zaug lawv WLL.

 

Cov ntsiab lus thiab cov lus pom zoo

Qhov 7: 1 kev nyab xeeb  yog qhov tseem ceeb ntawm cov qauv tsim uas muab cov npoo kev nyab xeeb ntawm lub lifting sling lub zog tawg thiab nws cov kev txwv ua haujlwm. Qhov xwm txheej no suav nrog cov xwm txheej hauv ntiaj teb - kev poob siab, kev puas tsuaj ib puag ncig, hnav, thiab lub kaum sab xis - uas tuaj yeem cuam tshuam lub zog sling.

 

Cov ntsiab lus tseem ceeb:

 

1.7: 1 yog tswj los ntawm EN 1492-1/2 thiab AS 4497: 2018  rau cov hlua hluavtaws

 

2.WLL tsis tawg lub zog -tsis txhob siv lub zog tawg raws li kev txwv kev ua haujlwm

 

3.Qhov kev nyab xeeb siab dua rau cov khoom siv hluavtaws yog vim lawv qhov tsis zoo  rau UV, cua sov, tshuaj lom neeg, thiab lub cev puas tsuaj.

 

4.Nco ntsoov xyuas lub sling tag — nws qhia ob qho tib si WLL thiab qhov kev nyab xeeb

 

5.Saib xyuas tsis tu ncua — qhov 7: 1 yam yog qhov tsis zoo, tsis yog hloov kho kom raug.

 

Lishenflex  tsim cov khoom siv nqa cov hlua nrog 7: 1 kev nyab xeeb, ua raws li EN 1492-1 thiab EN 1492-2 cov qauv. Peb cov khoom muaj cov cim xim xim-coded muaj peev xwm, cim serial tooj rau traceability, thiab muaj pov thawj-loaded kom ntseeg tau.

 

Yog tias koj xav tau kev pab nkag siab txog qhov yuav tsum tau muaj kev nyab xeeb rau koj cov haujlwm nqa khoom tshwj xeeb - lossis xav tau kev pab tshawb xyuas tias koj cov hlua ua tau raws li cov qauv tsim nyog - thov xa email rau sales@lishenflex.com , thiab peb pab neeg ua haujlwm yuav muab kev txhawb nqa ib leeg.