西安(an)多功能梯子在階式(shi)踏臺區域設(she)置(zhi)臺階時考慮了以下因素:
①級(ji)距 K(兩個相(xiang)鄰(lin)踏(ta)板(ban)(ban)之間的(de)(de)水(shui)(shui)平(ping)距離(li))和豎板(ban)(ban)高度(du)(du)(du)(du) h(兩個相(xiang)鄰(lin)踏(ta)板(ban)(ban)之間的(de)(de)垂(chui)直距離(li))應滿足下(xia)式:600 ≤ K+2h ≤ 660。其(qi)中 h ≤ 250mm, K ≥ 100mm。結合現(xian)(xian)(xian)場實際經(jing)驗和人機工(gong)程學(xue)理論,我們建議現(xian)(xian)(xian)場踏(ta)臺設計(ji)中級(ji)距 K=230±30mm;豎板(ban)(ban)高度(du)(du)(du)(du)h=200±30mm。②坡度(du)(du)(du)(du) α 應依據現(xian)(xian)(xian)場踏(ta)臺高度(du)(du)(du)(du)、臺階(jie)較(jiao)大(da)寬(kuan)度(du)(du)(du)(du)等因素(su)來(lai)確定(ding)。一般(ban)情(qing)(qing)況下(xia),α在30°~38°之間。③較(jiao)上一級(ji)踏(ta)板(ban)(ban)應與梯(ti)段(duan)平(ping)臺為(wei)同一水(shui)(shui)平(ping)面(mian)。④踏(ta)臺樓(lou)梯(ti)的(de)(de)上升高度(du)(du)(du)(du)H一般(ban)不(bu)宜(yi)超過(guo)3m,在特殊情(qing)(qing)況下(xia),這一高度(du)(du)(du)(du)也不(bu)應該超過(guo) 4m。否者,在連(lian)續到達另一梯(ti)段(duan)之前(qian),需(xu)要增加一梯(ti)段(duan)平(ping)臺,梯(ti)段(duan)平(ping)臺的(de)(de)長度(du)(du)(du)(du)至少應為(wei) 800mm,并(bing)大(da)于或等于梯(ti)段(duan)的(de)(de)寬(kuan)度(du)(du)(du)(du)。⑤踏(ta)臺開臺階(jie)的(de)(de)位置原則上應保證在相(xiang)鄰(lin)工(gong)位間設置一開口(kou),依據現(xian)(xian)(xian)場工(gong)位器具、電控裝置和焊接設備的(de)(de)分布情(qing)(qing)況而定(ding)。