Ma Master Links ndi Ma Master Link Assemblies ndi zinthu zofunika kwambiri popangazomangira zonyamula miyendo yambiri.Ngakhale kuti amapangidwa makamaka ngati gawo la unyolo, amagwiritsidwa ntchito pa mitundu yonse ya ma sling kuphatikizapo ma sling a chingwe cha waya ndi ma sling a webbing.
Komabe, kusankha maulalo olondola komanso ogwirizana sikophweka. Pali mitundu yosiyanasiyana ya zigawo za unyolo zomwe tingafune kulumikiza pomwe miyezo ndi machitidwe zimasiyana bwino - kotero ndikofunikira kukambirana zina mwa nkhani ndi malangizo.
Kodi Master Link ndi chiyani?
Ma Master Links ndi Ma Master Link Assemblies amadziwikanso ndi mayina ena kuphatikizapo ma oblong links, head rings, multi-master link assemblies ndi zina zotero. Ndi amodzi mwa mitundu yakale kwambiri ya forged linking tackle ndipo amakhala pamwamba pa multi-leg lifting slings.
Ma sling onyamula miyendo yambiri angakhale othandiza kwambiri pogawa mphamvu zonyamula ndikukwaniritsa kukhazikika ndi kuwongolera katundu wonyamula womwe tikufuna kunyamula. Komabe, vuto lalikulu ndilakutizingwe zoponyerandipo zigawo za sling nthawi zambiri zimapangidwa kuti zikhale malo amodzi olumikizirana kuti azinyamula katundu. Ngati tili ndi miyendo iwiri, itatu kapena inayi ku sling yathu, ndiye kuti miyendo iliyonse imafunikira china chake choti chigwirizane ndi malo olumikizirana (monga mbedza ya crane) kapena cholumikizira china chomwe chimalandira mwendo umodzi wokha nthawi imodzi.
Maulalo
Njira yomwe ma master links amapezera maulumikizidwe ndiyofunikira.
Pa sling ya miyendo iwiri, izi ndi zosavuta, Master Link imayesedwa kuti igwirizane ndi sling ziwiri kumapeto kwake:
Pa sling ya miyendo inayi, izi ndizosavuta. Kulumikiza miyendo inayi yodzaza ndi katundu kumapeto kwa master link n'koletsedwa, koma kugwiritsa ntchitoMsonkhano Waukulu Wolumikizira(Multi-Master Link) tikhoza kuchulukitsa awiri ndi awiri kuti tipeze miyendo inayi:
Miyendo itatu ndi yovuta kwambiri. Zolemba zina zakale zitha kuwonetsa miyendo itatu mu ulalo umodzi, komabe, izi tsopano ndizoletsedwa. Njira yoyenera ndikugwiritsa ntchito njira yomweyo monga momwe zinalili ndi miyendo inayi ndikugwiritsa ntchito sling imodzi yokha pa imodzi mwa zolumikizira.
Zovala ziwiri za miyendo
Zovala Zinayi Zokhala ndi Miyendo
Zonyamula Manja Atatu
Malire Ogwira Ntchito
Tikhoza kuyang'ana zithunzi zomwe zili pamwambapa ndikuganiza kuti moyo ndi wosavuta - koma osati mwachangu kwambiri!
Kodi ndi Malire Otani Ogwira Ntchito (WLL) omwe tiyenera kuyang'ana?
Mwina iyi ndi vuto loyamba mwa mavuto ambiri omwe tidzakumane nawo.
Ndi sling ya miyendo yambiri, tiyenera kuonetsetsa kuti miyendo yonse ya sling ndi Master Link ili ndi WLL yokwanira pa ntchitoyi. Tikhoza kusankha zigawo m'njira ziwiri - titha kusankha miyendo yomwe tikufuna poyamba, kenako kusankha Master Link kuti igwirizane - kapena titha kusankha Master Link choyamba, kenako tipeze miyendo ya sling yokhala ndi mphamvu zokwanira.
Kuti tiwerengere izi tiyenera kudziwa kaye ngodya ya sling.
Ku Australia iyi ndi ngodya yomwe ikuphatikizidwa pakati pa miyendo ya sling, ndipo WLL yayikulu yomwe tingaipereke idzawerengedwa pa madigiri 60.
Australian Standard Sling Angle yowerengera WLL yayikulu.
Kukhala ndi digiri ya 60° yomwe ilipo kwa ife kungakhale kothandiza kwambiri chifukwa kumathandiza kukulitsa mphamvu ndi kugwiritsa ntchito kwa ma sling athu.
Komabe pali vuto lina - ndipo limenelo ndi muyezo wofala ku Ulaya (EN standard).
Ma Angles a European Standard Chain Sling owerengera WLL yayikulu.
Apa ngodya imayesedwa kuchokera pa choyimirira, ndipo si vuto lalikulu - koma WLL yayikulu imawerengedwa pa 45° yomwe ndi yofanana ndi 90° yophatikizidwa ku Australia. Mwachidule, zikutanthauza kuti pa kukula kwina kwa unyolo, WLL yayikulu ya sling ndi ya master link yogwirizana ndi yaying'ono.
Pa ngodya yolumikizidwa ya 60°, master link WLL iyenera kukhala yochepera 1.73 kuposa leg WLL.
Pa ngodya yolumikizidwa ya 45°, WLL yolumikizira master iyenera kukhala yochepera 1.41 kupitirira WLL ya mwendo.
Zimatanthauzanso kuti kusankha zinthu ndi kugwirizana komwe kwalembedwa ku Europe sikoyenera ku Australia.
Lowetsani Gawani
Zingwe zokulungira za miyendo inayi zimapanga piramidi. Izi n'zosavuta chifukwa katundu wambiri amakhala ndi mawonekedwe amakona anayi - koma ali ndi vuto lake ndipo ndi kusakhazikika kwa static. Mwachidule, miyendo sigawana katundu mofanana.
Ndipotu, pali njira imodzi yokha yodziwira ngati katundu wagawidwa ndipo ndiyo kukula kwa zigawo ngati kuti zimagawana katundu ndi miyendo iwiri yokha ... ndicho chimene Australian Standards imachita - ndipo tikhoza kuchita mayeso omwe akusonyeza kuti ndi njira yanzeru.
Komabe, tanthauzo lake pa msonkhano wathu wa Master link ndilakuti ulalo wa pamwamba ndi ulalo wapakati wapansi ziyenera kukwaniritsa WLL yocheperako ya msonkhano ngati ziganiziridwa pa miyendo iwiri.
Malinga ndi AS3775 izi zikutanthauza:
Zofunikira pa Msonkhano wa Master Link ku Australia.
Apanso, malamulo a ku Ulaya amasiyana. Chomwe amalola ndi kuyika ma sling anayi a miyendo pa miyendo itatu. Zachidziwikire, sling ya miyendo inayi singathe kudzisamalira yokha pa miyendo itatu - ndi njira yokhazikika pa manambala okha.
Ichi ndi chimodzi mwa zinthu zomwe nthawi zina zimagwira ntchito koma nthawi zina sizigwira ntchito. Ngati katundu wonyamula katundu ndi wolimba komanso nthawi zina pamene kuchuluka kwa sling kumayandikira mawonekedwe enieni a piramidi, gawo la katundu pakati pa miyendo likhoza kukhala lochepa kwambiri ndipo sling iyenera kuchepetsedwa kuti iganizire za miyendo yofooka yomwe imabwera chifukwa cha izi.
Komabe, tanthauzo lake posankha ma assemblies a Master Link ndilakuti pamene master link WLL yatchulidwa ngati mtengo umodzi kunja kwa dziko - izi zitha kutanthauza kuti ma anterior link sali olimba mokwanira.
Chiyanjano cha European Master chimagwira ntchito motere:
Izi zimagwira ntchito ndi miyezo ya EN sling, koma sizikugwirizana ndi miyezo ya ku Australia. Chofunika kwambiri, sizophweka kwa wogwiritsa ntchito - ndiko kuti, pokhapokha ngati kusankha kwa chinthucho kwachitika mosamala kuti kugwirizane ndi malamulo a AS3775 sling.
European Standard Master Link Assemblies ingafunike kuchotsedwa mlingo kuti ma link apakati akhale olimba mokwanira.
Kuyika mbedza ya Crane
Anthu ambiri ogwiritsa ntchito sling amakumana ndi vuto loti sling igwire ntchito ndi mbedza za crane. Mwina mbedza ya crane ndi yaying'ono kwambiri kuti isagwiritsidwe ntchito ponyamula zida zonyamulira - kapena mbedza yonyamulira ndi yaying'ono kwambiri kuti isagwiritsidwe ntchito ponyamula zida zonyamulira.
Pofuna kulumikiza masterlink ku mbedza ya crane, kusamala kwambiri kuyenera kuchitika pogwiritsa ntchito njira zomwe zimagwirizana bwino.
Ma crochet onse amapangidwa kuti akhale olimba popindika mu mzere umodzi. Kuti agwiritse ntchito mphamvu zambiri amagwiritsa ntchito gawo lopingasa lomwe ndi lozama kuposa momwe lilili, komanso lonenepa mkati kuposa kunja.
Kuyang'ana ngati Masterlink ndi mbedza zili bwino.
Kudzaza anthu ambiri
Tikufuna kuti maulalo athu akhale aatali mokwanira kuti agwirizane ndi zinthu monga ma crane hooks pamwamba pawo komanso zolumikizira pansi - koma monga momwe tikuonera pamwambapa, nthawi zambiri ziyeneranso kukhala zazikulu mokwanira.
Izi si zofunikira pa mbedza ya crane yokha, komanso pa malo olumikizirana miyendo ya sling.
Ngati ziwalo zolumikizana sizingakhale mwachibadwa mu ulalo ndikunyamula katundu molondola, maulalowo amakhala odzaza kwambiri. Izi zimagogomezera ziwalozo m'njira zachilendo ndipo siziloledwa.
Kuchulukana kwa anthu kungakhale vuto lalikulu makamaka pamene masterlink imagwiritsidwa ntchito ndi zingwe za waya.
Mu zingwe zazing'ono, kupeza ulalo wabwino kungakhale kosavuta, koma ngati kulumikizana kuli kwakukulu ngati kungakhale kodzaza sizingagwire ntchito.
Mu chitsanzo chomwe chili pachithunzichi, kuphatikiza kwa ma thimbles opangidwa ndi zinthu zolemera (chithunzi chakumanja) kumasokonezana ndipo sikungakhale bwino.
M'mimba mwake
Zikumveka zosavuta - tiyeni tingopanga maulalo akulu pang'ono. Koma kukhala ndi maulalo okulirapo kumabweretsa mtengo. Tikufunikabe maulalo athu kuti akhale olimba mokwanira. Mkati mwa malire a mphamvu yachitsulo yomwe ilipo, izi nthawi zonse zimatanthauza maulalo onenepa opangidwa ndi dayamita yayikulu. Izi zingapangitse kuti zikhale zovuta kupeza zolumikizira kuti zigwirizane.
Maulalo ambiri ali ndi cholumikizira chopapatiza kuti chithandize kulumikiza cholumikizira cha unyolo. Ndikofunikira kuyang'ana kukula kwa pakamwa pa cholumikizira komanso kukula kwa mkati ngati mukufuna kuwona ngati chikukwanira ngati masterlink kapena shackle.
Kugwiritsa ntchito ulalo wokhala ndi chosindikizira chathyathyathya kuti muwongolere kugwirizana.
Mphamvu
Koma kodi masterlink iyenera kukhala yolimba bwanji? Malinga ndi miyezo ya sling ya ku Australia, masterlink ya sling* iliyonse iyenera kukhala ndi breaking load factor ya 4:1 - mofanana ndi momwe zimakhalira ndi sling za unyolo.
Izi zili choncho mosasamala kanthu za kuchuluka kwa katundu wosweka wa mitundu yosiyanasiyana ya miyendo ya sling: Unyolo, Chingwe cha Waya, Chingwe chozungulira, Ubweya, ndi zina zotero. Zinthu zofunika zosweka za sling, kaya ndi 5, 7, kapena kuposerapo, zimasungidwa kuti zofooka zosiyanasiyana za zinthu ziganiziridwe. Izi sizikhudza mwachindunji zolumikizira unyolo zomwe zaphatikizidwa, kotero kuchuluka kwa katundu wosweka kumakhalabe momwe zinalili ndi sling ya unyolo.
Komabe, izi sizili choncho m'maiko ena, ndipo malamulo am'deralo ayenera kutsatiridwa.
* Pali zina zomwe sizingachitike, mphamvu yochepetsera katundu wa sling yonse ya bokosi logwirira ntchito la crane yonyamula anthu imawirikiza kawiri, kotero ulalo womwe ungakhale 4:1 ndi 8:1 ukakonzedwa kuti ugwire ntchito.
Pali zina zambiri. Chingwe chilichonse cha masterlink chiyenera kukhala cholimba, chiyenera kugwira ntchito bwino nthawi zonse, ndipo chiyenera kupulumuka mayeso otsimikizira.
Chingwe cholumikizira unyolo chokhala ndi Master Link mu bedi loyesera
Chofunika kwambiri - ma masterlink sayikidwa pawokha pokhapokha atapangidwa kukhala sling yomwe imayesedwa. Pa mulingo woperekera zinthu, ma masterlink amayesedwa pa mandrels okha.
Kuyesa umboni ndi gawo lofunika kwambiri popanga ma sling odalirika. Pali mitundu yosiyanasiyana ya ziwalo zomwe zimagwirizana bwino kotero kuti kuyesa kumapereka chitsimikizo chofunikira kwambiri kuti ziwalo zonse ndi zolimba zogwirizana ndi WLL - ndipo zidzapulumuka kuuma kwa kugwiritsidwa ntchito popanda kupunduka.
Kuyesa kumatetezanso ku zolakwika za zigawo.
Masterlink yokhala ndi vuto lopanga lomwe lapezeka pakatha kukonzedwa.
Zoyambira
Zoyambira
Ma Master Links ndi ofunikira kwambiri pankhani yokonza chokweza cha pamwamba chifukwa ndi malo olumikizirana ma chain slings ndi kugwiritsa ntchito mitundu ina ya sling.
Mabuku onse akhoza kulembedwa okhudza ma masterlink ndipo tikhoza kungotchula mfundo zina zofunika apa:
• Maulalo akuluakulu a ma sling angapo a miyendo ayenera kukonzedwa bwino
• Kusiyana kwa miyezo ndi mavoti kuyenera kuganiziridwa posankha zigawo
• Ayenera kulumikiza bwino ma sling ndi ma crochet.
• Ayenera kukhala olimba mokwanira.
...ndipo chofunika kwambiri, tiyenera kufunafuna chizindikiro chofananira ndi satifiketi yoyesera umboni wa ma masterlink omwe amaperekedwa ngati gawo la msonkhano wa sling.
Ma Masterlink ndi abwino pokhapokha ngati apangidwa, agwiritsidwa ntchito komanso akuyang'aniridwa nthawi zonse.
Ayenera kusankhidwa ndi kuyesedwa nthawi zonse ndi munthu wodziwa bwino ntchito.
(mothandizidwa ndi Nobles)
Nthawi yotumizira: Juni-20-2022
