轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)機總成(cheng)即(ji)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi),又名(ming)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)機、方(fang)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)機,它(ta)是轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)系中(zhong)最重要的(de)部(bu)件。它(ta)的(de)作用是:增大轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)盤傳到(dao)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)傳動(dong)(dong)(dong)機構(gou)(gou)的(de)力(li)(li)(li)(li)和(he)改(gai)變力(li)(li)(li)(li)的(de)傳遞方(fang)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)。轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)的(de)操(cao)縱(zong)是全液壓式(shi)(shi)(shi)(shi),也就是說在轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)柱和(he)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)輪之間(jian)沒有(you)(you)機械連(lian)接(jie)(jie),在轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)與轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)油(you)(you)缸之間(jian)是液壓管或軟管鏈接(jie)(jie)。當轉(zhuan)(zhuan)動(dong)(dong)(dong)方(fang)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)盤,轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)根據方(fang)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)盤轉(zhuan)(zhuan)動(dong)(dong)(dong)比例輸送相(xiang)對的(de)油(you)(you)量(liang),該油(you)(you)量(liang)直接(jie)(jie)流到(dao)操(cao)縱(zong)缸相(xiang)應一(yi)側(ce),同(tong)時(shi)另(ling)一(yi)側(ce)的(de)油(you)(you)量(liang)回到(dao)油(you)(you)箱。轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)按結(jie)構(gou)(gou)形(xing)式(shi)(shi)(shi)(shi)可分(fen)為(wei):有(you)(you)齒(chi)輪齒(chi)條(tiao)式(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、蝸(gua)桿曲(qu)柄(bing)指銷(xiao)式(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、循環球(qiu)-齒(chi)條(tiao)齒(chi)扇(shan)式(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、循環球(qiu)曲(qu)柄(bing)指銷(xiao)式(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)、蝸(gua)桿滾輪式(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)等(deng)。按照助(zhu)力(li)(li)(li)(li)形(xing)式(shi)(shi)(shi)(shi)又可以分(fen):為(wei)機械式(shi)(shi)(shi)(shi)(無助(zhu)力(li)(li)(li)(li))轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi),和(he)動(dong)(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(shi)(shi)(有(you)(you)助(zhu)力(li)(li)(li)(li))轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)兩種,其(qi)中(zhong)動(dong)(dong)(dong)力(li)(li)(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)器(qi)(qi)又可以分(fen)為(wei)氣壓動(dong)(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(shi)(shi)、液壓動(dong)(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(shi)(shi)、電動(dong)(dong)(dong)助(zhu)力(li)(li)(li)(li)式(shi)(shi)(shi)(shi)、電液助(zhu)力(li)(li)(li)(li)式(shi)(shi)(shi)(shi)等(deng)種類。
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