Keeb Kwm Ntawm Ncej Vault

Tus ncej vault keeb kwm tshwm sim los ntawm tib neeg puag thaum ub uas siv ntoo thuv thiab hmuv dhia hla teeb meem. Raws li cov ntaub ntawv, muaj kev ua si ntawm kev hla tus dej hauv tebchaws Ireland xyoo 554 AD. Pole vault yog qhov kev tawm dag zog uas nrov hauv tsev kawm ntawv German. Xyoo 1789, German Busch dhia tau 1,83 metres, uas yog qhov ntxov tshaj plaws tau tshwm sim hauv ntiaj teb. Raws li kev taug qab thiab kev ua si nawv, nws tau tsim thawj zaug hauv tebchaws Askiv. Lub Plaub Hlis 17, 1843, tus kws tshaj lij British Roper hla kev 2,44 meters hauv Penrith. Nws tau nrov rau hauv cov tebchaws European thaum xaus ntawm lub xyoo pua puv 19. Ncej ncej yog thawj zaug siv ntoo ncej, qhov siab tshaj plaws ntawm 3.30 meters; nyob rau xyoo 1905, lub teeb sib dua thiab cov npoo xyoob hloov tau siv, nrog qhov siab tshaj plaws ntawm 4.77 meters; xyoo 1930, ib tus ncej hlau uas muaj zog tshaj plaws tau tshwm sim, thiab cov kis las tsis txhawj xeeb txog kev ua txhaum tus ncej. Nws tuaj yeem txhim kho tus taw tes thiab nrawm nrawm nrawm, thiab qhov tshwm sim zoo tshaj plaws yog 4.80 meters. Xyoo 1948, Tebchaws Asmeskas tsim thiab tsim cov kab hluav taws xob ua kom yooj yim thiab muaj fiber ntau ntxiv, uas tau dhau qhov siab ntawm 6 meters. Cov ncej ntawm tus ncej vault tuaj yeem ua cov fiberglass, hlau lossis lwm cov khoom haum, muaj qhov ntev ntawm 4.48 txog 4.52 meters thiab qhov hnyav tshaj plaws ntawm 2.25 kg. Qhov ntev thiab taub ntawm tus ncej tsis txwv, tab sis saum npoo yuav tsum yog tus. Cov neeg ncaws pob feem ntau nqa lawv tus kheej mus rau kev koom nrog kev sib tw. Tus txiv neej' s thiab poj niam' s ncej vaulting tau teev npe raws li Olympic txheej xwm xyoo 1896 thiab 2000 feem.