Dab tsi yog qhov yuav tsum tau ua rau kev sib txuas qauv thiab load-bearer muaj peev xwm ntawm txhuas ntaiv?

Aluminium Ladders yog prized rau lawv lub teeb lub zog sib xws thiab corrosion kev sib txuas ua ke: kev nyab xeeb kev lag luam muaj peev xwm ua rau cov neeg siv kev nyab xeeb {}}

{{01. Txoj Kev Sib Txuas: Kev Ncaj Ncees Ntawm Cov Pob Zeb

Cov ntsiab lus uas ntaiv cov khoom sib ntsib - rungs mus rau cov ciav hlau, ntu muaj peev xwm ua kom cov kev sib txuas no tiv thaiv kev ntxhov siab tseem ceeb:

Cov hau kev:

Riveting: cov txheej txheem ntau tshaj plaws rau txuas cov rungs rau sab ntug . Cov Qauv Kawm:

Siab zoo txhuas lossis corrosion-resistant steel rivee .

Kho cov sizing thiab cov lej txaus ib qho rung (feem ntau 2-4).

Kev Nyab Xeeb Chaw Kho Mob kom tiv thaiv kev cia siab nyob rau hauv kev co thiab thauj khoom .

Du tiav kom tsis txhob snagging lossis raug mob .

Vuam: Siv tsawg dua rau txhuas vim cov cua sov cuam tshuam rau cov khoom siv khoom siv {}}}}}} Yog tias ua haujlwm, nws yuav tsum yog:

Ua los ntawm cov neeg ua haujlwm tsim nyog siv cov tswv yim tsim nyog (e {. g} {.

Raug kom nruj kev sim tsis yog ua kev puas tsuaj (nyiam zas xim lossis xoo hluav taws xob) kom paub meej thiab tsis muaj qhov tawg.

Neeg kho tshuab khawm (bolts / neeg rau txuas ntxiv, hinges ntaiv, lossis koom nrog cov ntu txuas ntxiv.}}}}} Xav muaj:

Corrosion-resistant hardware (e {. g ., stainless hlau).

Tsim nyog torque thiab xauv cov twj (xauv tshuab

Cov taub hau du thiab cov ntsiab lus recessed kom tiv thaiv kev raug mob .

Cov kev xav tau tseem ceeb nyob thoob plaws txoj hauv kev:

Tsis muaj kev txav mus los: kev sib txuas yuav tsum ua kom nruj thiab tiv thaiv kev ua si tseem ceeb, wobble, lossis slippage thaum tus ntaiv yog thauj khoom lossis siv .

Corrosion Kuj: Cov pob qij txha yuav tsum tau tiv thaiv lossis tsim los ntawm cov ntaub ntawv tiv thaiv cov galvanic corrosion ntawm dissimilar cov hlau {}}

Kev ntxhov siab: Tus qauv yuav tsum tau faib cov khoom thauj tau yooj yim ntawm cov ntsiab lus sib txuas kom txo cov kev ntxhov siab {}}

Durability: kev sib txuas yuav tsum tiv thaiv cov voj voog uas thauj khoom / teeb tsa, teeb tsa / cia, thiab ib puag ncig .

2. thauj khoom muaj peev xwm: kev ntsuas ntawm lub zog

This defines the maximum weight a ladder can safely support, including the user, tools, and materials. Requirements are strictly codified:

Cov Cuab Yeej Siv Nqi (raws li Ansi A14.2 / OSHA 1910.23):

Hom III (Lub Teeb Haujlwm): 200 LBS (91 kg) siab kawg. rau cov haujlwm hauv tsev neeg {3}

Hom II (Nruab Nrab Nruab Nrab): 225 lbs (102 kg) ntau tshaj. rau lub teeb ua haujlwm ua haujlwm {}}

Hom Kuv (Hnyav Plaub Ntug): 250 LBS (113 kg) ntau tshaj.}.

Hom IA (Ntxiv Tes Haujlwm Ntau): 300 lbs (136 kg) siab kawg . rau cov khoom lag luam siv .

Hom IAA (cov haujlwm tshwj xeeb): 375 lbs (170 kg) siab kawg . muaj peev xwm ntau rau cov haujlwm tshwj xeeb.

Daws Labing: Lub luag haujlwm ntsuas (e {{} g {lbs}. lbs "}- 300

Kuaj thiab Tshawb Nrhiav:

Ladders yauv nruj li qub ntsuas phoo (e .}!

Kev ntsuam xyuas simulate-rooj plaub ntug dej txawv: ntaiv ntawm qhov siab tshaj plaws, taw tes zoo tshaj plaws, taw tes thauj khoom ntawm ib Redgs.

Ua raws li Ansi A14 {. 2 (US) lossis sib npaug hauv European cov qauv (zoo li EN 131 hauv Tebchaws Europe) yog yuav tsum tau ua lag luam / muaj ntaiv.

Vim li cas cov kev xav tau no teeb meem:

Kev tsis quav ntsej kev sib txuas kev ncaj ncees lossis tshaj cov khoom muaj peev xwm tau muaj peev xwm tau txais kev rau txim:

Txheej Txheem Ua Haujlwm: Xiav Rivets, tawg welds, lossis overloaded rungs tuaj yeem ua rau dhuav dheev .

Cov neeg siv kev raug mob: poob los ntawm qhov siab yog ib qho ua rau muaj kev ua haujlwm loj thiab raug xwm txheej hauv tsev .

Kev cai lij choj kev cai lij choj: Siv tsis meej lossis muaj cov ntaiv loj tshaj OSHA cov cai thiab tuaj yeem tsis muaj nyiaj tuav pov hwm {}}

Xaus:

Cov hau kev sib txuas thiab cov khoom muaj peev xwm thauj khoom yog qhov tsis sib xws ntawm cov kab sib luag ntawm kev ua kom ruaj khov rau kev ua kom ruaj khov rau kev ua kom ruaj khov rau kev ua kom nruj kev cai Nrog nws hom / ntaus nqi, thiab tsis txhob tshaj qhov muaj peev xwm uas muaj cov cim kev sib txuas ua ntu zus thiab kev ua kom tsis txhob muaj kev nyab xeeb thiab ua kom muaj kev nyab xeeb rau cov ascents.