拖式單(dan)鋼輪振動壓路(lu)機(ji)的工作原理和特(te)點

與振動(dong)壓(ya)(ya)(ya)路機(ji)(ji)相比，靜(jing)力式(shi)壓(ya)(ya)(ya)路機(ji)(ji)的壓(ya)(ya)(ya)實功(gong)能(neng)具有一(yi)定(ding)(ding)的局限(xian)(xian)性，壓(ya)(ya)(ya)實厚度(du)也受到一(yi)定(ding)(ding)限(xian)(xian)制，一(yi)般不超(chao)過200~250mm，而且(qie)光面靜(jing)力式(shi)壓(ya)(ya)(ya)路機(ji)(ji)在壓(ya)(ya)(ya)實過程中容易產生“虛”壓(ya)(ya)(ya)實現象。但是(shi)，由(you)于靜(jing)力式(shi)壓(ya)(ya)(ya)路機(ji)(ji)結(jie)構簡單，使用和維修方便，而且(qie)國(guo)產靜(jing)力式(shi)壓(ya)(ya)(ya)路機(ji)(ji)系列化程度(du)高，可供選擇的機(ji)(ji)型較多，能(neng)適應某些(xie)特定(ding)(ding)條(tiao)件的壓(ya)(ya)(ya)實工(gong)作，因而國(guo)內仍普遍在機(ji)(ji)械化施工(gong)程度(du)不高的施工(gong)條(tiao)件下使用靜(jing)力式(shi)壓(ya)(ya)(ya)路機(ji)(ji)。

與(yu)自行式(shi)振(zhen)(zhen)動壓路(lu)機的(de)(de)工作原理相同(tong)，拖式(shi)振(zhen)(zhen)動壓路(lu)機也是依(yi)靠自重和激(ji)振(zhen)(zhen)力迫使被壓實材料做(zuo)垂直強迫振(zhen)(zhen)動，急劇減小土(tu)壤(rang)顆粒間(jian)的(de)(de)內(nei)摩擦力，達到(dao)壓實土(tu)壤(rang)的(de)(de)目(mu)的(de)(de)；激(ji)振(zhen)(zhen)力的(de)(de)大小可(ke)以根據(ju)需要進(jin)行調整。不(bu)同(tong)的(de)(de)是拖式(shi)壓路(lu)機不(bu)能行走，必須(xu)通過其他牽引(yin)車拖動才能行走和壓實。根據(ju)不(bu)同(tong)的(de)(de)壓實厚度(du)和材料可(ke)選擇不(bu)同(tong)的(de)(de)碾(nian)壓輪質(zhi)量(liang)或靜力或振(zhen)(zhen)動。

超重噸位拖式(shi)振(zhen)(zhen)(zhen)動(dong)壓(ya)(ya)路(lu)機(ji)是(shi)高速公路(lu)、鐵路(lu)、水壩、機(ji)場等(deng)大型工(gong)(gong)(gong)程基礎施(shi)工(gong)(gong)(gong)中(zhong)不可(ke)缺(que)少的(de)(de)壓(ya)(ya)實機(ji)械，特別是(shi)對于(yu)大填方施(shi)工(gong)(gong)(gong)，當(dang)壓(ya)(ya)實度要求95%以(yi)上時(shi)，更顯(xian)示出(chu)這種(zhong)機(ji)械的(de)(de)必要性(xing)(xing)和高效(xiao)性(xing)(xing)。多年來，國內外生產的(de)(de)拖式(shi)振(zhen)(zhen)(zhen)動(dong)壓(ya)(ya)路(lu)機(ji)幾乎全為機(ji)械傳動(dong)方式(shi)，這種(zhong)方式(shi)的(de)(de)最(zui)大特點是(shi)成(cheng)本(ben)低、傳動(dong)效(xiao)率(lv)高，然(ran)而(er)在實踐中(zhong)也暴露出(chu)許多缺(que)點，如可(ke)靠性(xing)(xing)、傳動(dong)效(xiao)率(lv)并不如理(li)想的(de)(de)那樣高，機(ji)架不能(neng)有效(xiao)隔振(zhen)(zhen)(zhen)影(ying)響(xiang)壓(ya)(ya)實效(xiao)果等(deng)。因此，在當(dang)前(qian)國家加大基礎設(she)施(shi)建設(she)力(li)度的(de)(de)大前(qian)提下，工(gong)(gong)(gong)作可(ke)靠、性(xing)(xing)能(neng)優良的(de)(de)液壓(ya)(ya)傳動(dong)拖式(shi)振(zhen)(zhen)(zhen)動(dong)壓(ya)(ya)路(lu)機(ji)的(de)(de)發展就成(cheng)為必然(ran)。