(1)Grade 80 welded lifting cheniWLL uye index
Tafura 1: WLL ine cheni yekupfura gumbo (s) angle ye 0 ° ~ 90 °
| Link dhayamita (mm) | Max.WLL | ||
| Gumbo rimwe chete t | 2-gumbo t | 3 kana 4 gumbo t | |
| 7.1 | 1.6 | 2.2 | 3.3 |
| 8.0 | 2.0 | 2.8 | 4.2 |
| 9.0 | 2.5 | 3.5 | 5.2 |
| 10.0 | 3.2 | 4.4 | 6.7 |
| 11.2 | 4.0 | 5.6 | 8.4 |
| 12.5 | 5.0 | 7.0 | 10.5 |
| 14.0 | 6.3 | 8.8 | 13.2 |
| 16.0 | 8.0 | 11.2 | 16.8 |
| 18.0 | 10.0 | 14.0 | 21.0 |
Tafura 2: WLL index
(2)cheni chipfuramabwemhando uye makumbo angle
a.chipfuramabwe chengetani yegumbo rimwe chete
b.2-leg cheni chipfuramabwe
c.3-gumbo cheni chipfuramabwe
d.4-gumbo cheni chipfuramabwe
(3) kusimudza round link cheni kushandiswa
a.uremu hwemutoro huchaenzana kana kushoma pane ekusimudza cheni chipfuramabwe chikuru.WLL.
b.paunenge uchishandisa 2-leg kana multi leg chain sling, iyo yakakura makumbo ekupfura angled, iyo shoma mutoro inogona kusimudza;kona yemakumbo ichave isingasviki 120° chero ipi zvayo (kureva., kona yegumbo recheni ine vertical lead angle ichave isingasviki 60°).
c.kana uchisimudza muchoker hitch, mutoro uchave uri pasi pe80% WLL.
d.Cheni yekusimudza ichave yakatwasuka isina kudhonzwa, kupfumba kana kukotama.Edza kudzivisa zvinhu zvinorema zvichikunguruka pacheni.
(1) kuongorora zuva nezuva
a.Inspector, frequency uye zvinyorwa
Mushandi kana mushandi akasarudzwa achaita ongororo yechitarisiko pacheni yekusimudza zuva rega rega rekushanda, uye pachave nerekodhi ye "mazuva ese ekuongorora nzira yechipfuramabwe" (ona Annex) panzvimbo, zvichiratidza kuti chipfuramabwe chinogona kushandiswa semazuva ese.
b.Kuongorora kwekuona
Tarisa chitarisiko chezviratidzo zvekupfeka zvakanyanya, deformation kana kukuvara kwekunze.Kana kukanganisa kunowanikwa mukuongorora, simbisa kana inogona kushandiswa zvakare maererano neyakajairwa yekuongorora nzira.
(2) Kuongorora nguva nenguva
a.Inspector, frequency uye zvinyorwa
Vashandi vakasarudzwa vachaita kuongorora kwakazara pamaketani maererano nezviratidzo zvakakanganisika zvakarongwa nekuongorora nguva dzose, uye kuita zvinyorwa kuti zviongorore kana ketani inogona kuramba ichishandiswa.
b.Tarisa mapoinzi
i）Kuti mamaki ekunze akadai sekusimudza cheni mucherechedzo uye wekupedzisira kushanda mutoro wakajeka;
ii) Iyo yepamusoro uye yakaderera yekupedzisira zvibatanidza (master link, intermediate link, connectors and hooks) yeketani yekusimudza yakaremara, inochekwa uye yakatsemuka, iyo inodarika zvinodiwa uye haigone kushandiswa;
iii) Deformation yeketani yekubatanidza: iyo ketani yeketani yakamonyoroka, yakakotama uye yakareba, uye haigone kushandiswa kana ichipfuura zvakajairwa zvinodiwa;
iv) Kupfeka kwekubatanidza: notch, notch, gouge uye kupfeka kwechibatanidza kunze kwechikamu chakatwasuka hachigone kushandiswa kana ichipfuura zvakajairwa zvinodiwa;
v) Hook deformation: iyo "kuvhura" deformation uye kukanganisa kwekuvhurika kwehuku kunopfuura izvo zvakajairwa zvinodiwa uye hazvigone kushandiswa;
vi) Kutsemuka: kutsemuka kunoratidzwa nekutarisa kwekuona kana NDT haigone kushandiswa.
a.deformation:
kureba kwekunze＞3％
kureba kwemukati＞5％
b.kupfeka:
link cross section dhayamita mushure mekupfeka haifanire kuderera ne10% (kureva, dhayamita <90% yezita)
c.anotsemuka:
Hapana kutsemuka kunotenderwa pamusoro peiyo cheni chinongedzo kuburikidza nekutarisa kwekuona kana kuongorora michina.
d.kukotama kana kukanganisa:
Hapana kubhenda kuri pachena kana kukanganisa, kuora kwakakomba kana kusungirirwa kusingabviswe kunobvumidzwa kune cheni chinongedzo.
(2) chirauro
a.Hook kuvhura: kuwedzera kwehoko yekuvhura saizi haifanire kudarika 10% yezita rekukosha.
b.Kupfeka kwechikamu chakamanikidzwa (chine ngozi): ukobvu hwechikamu panzvimbo yekupfeka hauzoderedzwa neinopfuura 5%
c.Twist deformation: iyo twist deformation yehoko yemuviri haifaniri kudarika 5%.
d.Kutsemuka: kutsemuka hakubvumidzwe pane yese hoko yepamusoro nekutarisa kwekuona kana kuongorora michina.
e.Nicks uye gouges: vanogona kugadziriswa nekukuya kana kuisa.Iyo yakagadziridzwa nzvimbo uye yakatarisana nenzvimbo ichachinja zvakanaka pasina kukurumidza kuchinja muchikamu.Ukobvu hwechikamu chakanatswa hachifaniri kuderedzwa nepamusoro pe5%.
(3) master link
a.Kukanganisa: kukanganisa kwese master link hakupfuure 5%.
b.Pfeka: kupfeka kweiyo master link kumusoro hakufaniri kudarika 10% yedhayamita yepakutanga
c.Kutsemuka: kutsemuka hakubvumidzwe pane yese master link surface nekutarisa kwekuona kana kuongorora michina.
(4) simbi nezvimwe zvinhu
a.Kuvhura: saizi yekuvhura yeshackle inodarika 10% yekukosha kwepakutanga.
b.Pfeka: dhayamita yepini kana pini shaft inopfekwa kupfuura 10% yedhayamita yepakutanga;kupfeka kwechikamu chakamanikidzwa (nengozi) chinopfuura 5%
c.Mutswe: hapana kutsemuka kunotenderwa pane yese accessory pamusoro kuburikidza nekutarisa kwekuona kana ongororo yemidziyo.
(1) Normal chain links
(2) Chiredzo chakaremara (chakatsemurwa)
(3) Deformation, kupfeka uye cratering yechain links (kukwenya)
(4) Kupfeka kwepanzvimbo pamusoro pechetani chinongedzo (chinogona kugadziriswa)
(5) Iyo cheni chinongedzo chakapfekwa zvishoma uye chakaremara (chinogona kuramba chichishandiswa)
Nguva yekutumira: Zvita-17-2021