轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機(ji)總成即轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi),又(you)名(ming)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機(ji)、方(fang)向(xiang)(xiang)(xiang)機(ji),它(ta)是(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系中最重(zhong)要的(de)(de)(de)部件。它(ta)的(de)(de)(de)作(zuo)用是(shi):增大轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)盤(pan)傳(chuan)(chuan)(chuan)到(dao)(dao)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)傳(chuan)(chuan)(chuan)動(dong)(dong)機(ji)構(gou)的(de)(de)(de)力(li)(li)(li)和改變(bian)力(li)(li)(li)的(de)(de)(de)傳(chuan)(chuan)(chuan)遞(di)方(fang)向(xiang)(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)的(de)(de)(de)操(cao)縱是(shi)全液(ye)壓(ya)(ya)式(shi)(shi)(shi)(shi)(shi),也就是(shi)說在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)柱(zhu)和轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)輪(lun)之(zhi)間(jian)沒有機(ji)械連接(jie),在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)與(yu)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)油(you)缸之(zhi)間(jian)是(shi)液(ye)壓(ya)(ya)管或(huo)軟管鏈接(jie)。當(dang)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)方(fang)向(xiang)(xiang)(xiang)盤(pan),轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)根據方(fang)向(xiang)(xiang)(xiang)盤(pan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)比(bi)例輸送相對(dui)的(de)(de)(de)油(you)量,該油(you)量直接(jie)流到(dao)(dao)操(cao)縱缸相應一側,同(tong)時(shi)另(ling)一側的(de)(de)(de)油(you)量回到(dao)(dao)油(you)箱。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)按結(jie)構(gou)形式(shi)(shi)(shi)(shi)(shi)可分(fen)(fen)為(wei):有齒輪(lun)齒條式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)、蝸(gua)(gua)桿曲(qu)柄(bing)指(zhi)銷式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)、循(xun)環球(qiu)(qiu)-齒條齒扇式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)、循(xun)環球(qiu)(qiu)曲(qu)柄(bing)指(zhi)銷式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)、蝸(gua)(gua)桿滾輪(lun)式(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)等(deng)。按照助力(li)(li)(li)形式(shi)(shi)(shi)(shi)(shi)又(you)可以分(fen)(fen):為(wei)機(ji)械式(shi)(shi)(shi)(shi)(shi)(無助力(li)(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi),和動(dong)(dong)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)(有助力(li)(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)兩種(zhong),其中動(dong)(dong)力(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)又(you)可以分(fen)(fen)為(wei)氣壓(ya)(ya)動(dong)(dong)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)、液(ye)壓(ya)(ya)動(dong)(dong)力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)、電動(dong)(dong)助力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)、電液(ye)助力(li)(li)(li)式(shi)(shi)(shi)(shi)(shi)等(deng)種(zhong)類。
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