轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)機總(zong)成即(ji)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi),又名轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)機、方(fang)向(xiang)(xiang)機,它(ta)是(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系(xi)中最重要的部件。它(ta)的作(zuo)用是(shi):增大轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)盤(pan)傳到(dao)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)傳動(dong)(dong)機構(gou)的力(li)和改變力(li)的傳遞方(fang)向(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)的操縱是(shi)全液(ye)(ye)壓式(shi)(shi)(shi),也就是(shi)說(shuo)在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)柱和轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)輪(lun)之間(jian)沒有(you)機械(xie)連接,在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)與轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)油(you)缸(gang)之間(jian)是(shi)液(ye)(ye)壓管或軟管鏈接。當轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)方(fang)向(xiang)(xiang)盤(pan),轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)根據方(fang)向(xiang)(xiang)盤(pan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)比例輸送相對的油(you)量,該油(you)量直接流到(dao)操縱缸(gang)相應一(yi)側,同時另(ling)一(yi)側的油(you)量回到(dao)油(you)箱。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)按結構(gou)形(xing)式(shi)(shi)(shi)可分(fen)為:有(you)齒(chi)輪(lun)齒(chi)條(tiao)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、蝸桿(gan)曲(qu)(qu)柄指銷(xiao)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、循(xun)環球-齒(chi)條(tiao)齒(chi)扇式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、循(xun)環球曲(qu)(qu)柄指銷(xiao)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、蝸桿(gan)滾輪(lun)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)等。按照助(zhu)力(li)形(xing)式(shi)(shi)(shi)又可以分(fen):為機械(xie)式(shi)(shi)(shi)(無助(zhu)力(li))轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi),和動(dong)(dong)力(li)式(shi)(shi)(shi)(有(you)助(zhu)力(li))轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)兩種,其中動(dong)(dong)力(li)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)又可以分(fen)為氣壓動(dong)(dong)力(li)式(shi)(shi)(shi)、液(ye)(ye)壓動(dong)(dong)力(li)式(shi)(shi)(shi)、電動(dong)(dong)助(zhu)力(li)式(shi)(shi)(shi)、電液(ye)(ye)助(zhu)力(li)式(shi)(shi)(shi)等種類。
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