轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)機總成即轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi),又(you)名轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)機、方向(xiang)(xiang)機,它是轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系中(zhong)最重要(yao)的(de)(de)部件(jian)。它的(de)(de)作用是:增大轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)盤(pan)(pan)傳(chuan)到(dao)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)傳(chuan)動(dong)(dong)(dong)機構的(de)(de)力(li)(li)(li)和改變力(li)(li)(li)的(de)(de)傳(chuan)遞方向(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)的(de)(de)操(cao)縱是全液(ye)壓式(shi)(shi)(shi)(shi)(shi),也就是說(shuo)在轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)柱(zhu)和轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)輪之間沒有機械連(lian)接,在轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)與轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)油缸之間是液(ye)壓管(guan)或(huo)軟(ruan)管(guan)鏈接。當轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)方向(xiang)(xiang)盤(pan)(pan),轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)根據方向(xiang)(xiang)盤(pan)(pan)轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)比例輸送相對的(de)(de)油量(liang),該油量(liang)直接流到(dao)操(cao)縱缸相應(ying)一側(ce),同時另(ling)一側(ce)的(de)(de)油量(liang)回到(dao)油箱。轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)按結構形式(shi)(shi)(shi)(shi)(shi)可(ke)分(fen)(fen)為:有齒(chi)輪齒(chi)條式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)、蝸桿曲(qu)柄指銷(xiao)式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)、循環(huan)(huan)球-齒(chi)條齒(chi)扇式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)、循環(huan)(huan)球曲(qu)柄指銷(xiao)式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)、蝸桿滾輪式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)等。按照(zhao)助(zhu)力(li)(li)(li)形式(shi)(shi)(shi)(shi)(shi)又(you)可(ke)以分(fen)(fen):為機械式(shi)(shi)(shi)(shi)(shi)(無助(zhu)力(li)(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi),和動(dong)(dong)(dong)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)(有助(zhu)力(li)(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)兩種,其中(zhong)動(dong)(dong)(dong)力(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)又(you)可(ke)以分(fen)(fen)為氣壓動(dong)(dong)(dong)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)、液(ye)壓動(dong)(dong)(dong)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)、電(dian)動(dong)(dong)(dong)助(zhu)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)、電(dian)液(ye)助(zhu)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)等種類。
奧迪Q2L是(shi)奧迪旗下的一款汽車。2018年10月(yue)13日,奧迪Q2L正式上市。
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