轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)機(ji)總成即(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(ji)、方(fang)(fang)向(xiang)(xiang)機(ji),它是(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系中(zhong)最(zui)重要的(de)部件。它的(de)作用是(shi):增(zeng)大轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)盤傳(chuan)到轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)傳(chuan)動(dong)(dong)(dong)機(ji)構(gou)的(de)力(li)(li)和改變力(li)(li)的(de)傳(chuan)遞方(fang)(fang)向(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)的(de)操縱是(shi)全液壓(ya)式(shi),也(ye)就是(shi)說在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)柱和轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)輪之間沒(mei)有(you)機(ji)械連接(jie)(jie),在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)與轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)油缸之間是(shi)液壓(ya)管或軟管鏈接(jie)(jie)。當轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)方(fang)(fang)向(xiang)(xiang)盤,轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)根據(ju)方(fang)(fang)向(xiang)(xiang)盤轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)比例輸送相(xiang)對的(de)油量(liang),該油量(liang)直接(jie)(jie)流到操縱缸相(xiang)應(ying)一(yi)(yi)側,同時另一(yi)(yi)側的(de)油量(liang)回到油箱。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)按結(jie)構(gou)形式(shi)可分為(wei)(wei):有(you)齒輪齒條式(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、蝸(gua)桿曲(qu)(qu)柄指銷式(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、循(xun)環(huan)球-齒條齒扇式(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、循(xun)環(huan)球曲(qu)(qu)柄指銷式(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、蝸(gua)桿滾輪式(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)等(deng)。按照(zhao)助(zhu)(zhu)(zhu)力(li)(li)形式(shi)又可以分:為(wei)(wei)機(ji)械式(shi)(無助(zhu)(zhu)(zhu)力(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi),和動(dong)(dong)(dong)力(li)(li)式(shi)(有(you)助(zhu)(zhu)(zhu)力(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)兩種,其中(zhong)動(dong)(dong)(dong)力(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)又可以分為(wei)(wei)氣壓(ya)動(dong)(dong)(dong)力(li)(li)式(shi)、液壓(ya)動(dong)(dong)(dong)力(li)(li)式(shi)、電(dian)動(dong)(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)式(shi)、電(dian)液助(zhu)(zhu)(zhu)力(li)(li)式(shi)等(deng)種類。
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