轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)機(ji)(ji)總成即轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi),又(you)(you)名轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)機(ji)(ji)、方向(xiang)(xiang)(xiang)(xiang)機(ji)(ji),它是轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)系中最重要的(de)(de)部(bu)件。它的(de)(de)作用是:增大轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)盤(pan)傳到(dao)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)傳動(dong)(dong)機(ji)(ji)構的(de)(de)力(li)(li)(li)(li)和(he)改變(bian)力(li)(li)(li)(li)的(de)(de)傳遞(di)方向(xiang)(xiang)(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)的(de)(de)操縱(zong)是全液(ye)壓(ya)(ya)式(shi)(shi),也就是說(shuo)在轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)柱(zhu)和(he)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)輪(lun)之間(jian)沒有機(ji)(ji)械(xie)連(lian)接(jie),在轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)與轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)油缸之間(jian)是液(ye)壓(ya)(ya)管(guan)(guan)或軟管(guan)(guan)鏈接(jie)。當轉(zhuan)(zhuan)(zhuan)動(dong)(dong)方向(xiang)(xiang)(xiang)(xiang)盤(pan),轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)根據方向(xiang)(xiang)(xiang)(xiang)盤(pan)轉(zhuan)(zhuan)(zhuan)動(dong)(dong)比例輸送(song)相對的(de)(de)油量,該油量直接(jie)流到(dao)操縱(zong)缸相應一側(ce)(ce),同時另一側(ce)(ce)的(de)(de)油量回(hui)到(dao)油箱(xiang)。轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)按結構形式(shi)(shi)可分(fen)為(wei)(wei):有齒(chi)(chi)輪(lun)齒(chi)(chi)條式(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、蝸(gua)桿(gan)(gan)曲柄指(zhi)銷(xiao)(xiao)式(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、循環球(qiu)-齒(chi)(chi)條齒(chi)(chi)扇(shan)式(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、循環球(qiu)曲柄指(zhi)銷(xiao)(xiao)式(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、蝸(gua)桿(gan)(gan)滾輪(lun)式(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)等。按照助(zhu)(zhu)力(li)(li)(li)(li)形式(shi)(shi)又(you)(you)可以(yi)分(fen):為(wei)(wei)機(ji)(ji)械(xie)式(shi)(shi)(無助(zhu)(zhu)力(li)(li)(li)(li))轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi),和(he)動(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(有助(zhu)(zhu)力(li)(li)(li)(li))轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)兩種,其中動(dong)(dong)力(li)(li)(li)(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)器(qi)(qi)又(you)(you)可以(yi)分(fen)為(wei)(wei)氣(qi)壓(ya)(ya)動(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)、液(ye)壓(ya)(ya)動(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)、電動(dong)(dong)助(zhu)(zhu)力(li)(li)(li)(li)式(shi)(shi)、電液(ye)助(zhu)(zhu)力(li)(li)(li)(li)式(shi)(shi)等種類(lei)。
紅(hong)旗H7是(shi)一(yi)汽集團紅(hong)旗復興(xing)規劃中首款面向市場(chang)的車(che)(che)型。紅(hong)旗h7紅(hong)旗轎車(che)(che)從(cong)一(yi)誕(dan)生就(jiu)成為我國(guo)高級領導配備用車(che)(che),可以說是(shi)風靡一(yi)時。到(dao)奧(ao)迪A6進入中國(guo)后,紅(hong)旗的地(di)位才被奧(ao)迪取代。
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