Portal scaffold ndeimwe yeanonyanya kushandiswa scaffolds mukuvaka. Nekuti iyo huru furemu iri muchimiro che "gonhi", inodaidzwa kuti portal kana portal scaffold, inozivikanwawo seGondo furemu kana gantry. Rudzi urwu rwescaffold rinonyanya kuumbwa main frame, cross frame, cross diagonal brace, scaffold board, inogadziriswa base, nezvimwe.

Portal scaffold ndeimwe yeanonyanya kushandiswa scaffolds mukuvaka. Nekuti iyo huru furemu iri muchimiro che "gonhi", inodaidzwa kuti portal kana portal scaffold, inozivikanwawo seGondo furemu kana gantry. Rudzi urwu rwescaffold rinonyanya kuumbwa ne main frame, cross frame, cross diagonal brace, scaffold board, adjustable base, etc. Portal scaffold chishandiso chekuvaka chakatanga kugadzirwa neUnited States mukupera kwema1950s. Nekuti ine zvakanakira kuungana kwakapfava uye disassembly, kufamba kwakaringana, yakanaka kutakura kugona, yakachengeteka uye yakavimbika kushandiswa uye yakanaka mabhenefiti ehupfumi, yakagadzira nekukurumidza. Pakazosvika ma1960, Europe, Japan nedzimwe nyika dzakatevedzana dzakaunza uye dzakagadzira rudzi urwu rwescaffold. MuEurope, Japan nedzimwe nyika, kushandisa portal scaffold ndiyo yakakura, inoverengera inosvika makumi mashanu muzana emarudzi ese ezvikafu, uye makambani mazhinji ehunyanzvi anogadzira portal scaffolds emhando dzakasiyana akamiswa munyika dzakasiyana.

Kubva kuma1970, China yakatevedzana yakaunza portal scaffold system kubva kuJapan, United States, Britain nedzimwe nyika, iyo yakashandiswa mukuvakwa kwezvimwe zvivakwa zvepamusoro uye yakawana mhedzisiro yakanaka. Iyo inogona kushandiswa kwete chete seyemukati uye yekunze scaffolds yekuvaka kuvaka, asiwo sepasi slab, beam formwork rutsigiro uye mobile scaffold. Iyo ine mamwe mabasa, saka inonzi zvakare yakawanda-inoshanda scaffold.

Pakazosvika ma1980, vamwe vekumba nevagadziri vakatanga kutevedzera portal scaffold. Kusvika 1985, gumi portal scaffold vagadziri vakasimbiswa zvakatevedzana. Iyo portal scaffold yakave yakakurumbira uye yakashandiswa muzvirongwa zvekuvaka mune dzimwe nzvimbo, uye yakagamuchirwa nezvikamu zvekuvaka zveGuangda. Nekudaro, nekuda kweakasiyana maratidziro echigadzirwa uye zviyero zvemhando yefekitori yega yega, zvinounza mamwe matambudziko pakushandisa uye manejimendi yekuvaka unit. Izvi zvakakanganisa zvakanyanya kusimudzirwa kwehunyanzvi hutsva uhu.

Pakazosvika ma1990, rudzi urwu rwescaffold rwakanga rwusati rwagadzirwa uye rwakanga ruchishomeka mukuvaka. Mafekitori mazhinji egantry scaffold akavharwa kana kuchinjirwa kugadzirwa, uye mashoma mayuniti ane yakanaka yekugadzirisa mhando yakaramba ichigadzira. Naizvozvo, zvinodikanwa kukudziridza rudzi rutsva rwe portal tripod mukubatana nehunhu hwekuvaka hwenyika yedu.