轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機(ji)總(zong)成即轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi),又(you)名轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機(ji)、方(fang)(fang)(fang)向(xiang)(xiang)(xiang)機(ji),它是(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系中(zhong)(zhong)最重要的部件。它的作用是(shi):增(zeng)大轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)盤(pan)傳到轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)傳動(dong)(dong)機(ji)構的力(li)(li)和改變力(li)(li)的傳遞方(fang)(fang)(fang)向(xiang)(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)的操(cao)縱(zong)是(shi)全(quan)液壓(ya)式(shi)(shi),也(ye)就是(shi)說在轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)柱(zhu)和轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)輪之間沒有機(ji)械連接,在轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)與轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)油缸(gang)之間是(shi)液壓(ya)管或軟管鏈接。當轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)方(fang)(fang)(fang)向(xiang)(xiang)(xiang)盤(pan),轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)根據(ju)方(fang)(fang)(fang)向(xiang)(xiang)(xiang)盤(pan)轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)比例輸(shu)送相對的油量,該油量直接流(liu)到操(cao)縱(zong)缸(gang)相應一側(ce),同時另(ling)一側(ce)的油量回到油箱。轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)按結(jie)構形式(shi)(shi)可(ke)分(fen)為:有齒(chi)輪齒(chi)條式(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)、蝸(gua)桿曲(qu)(qu)柄指銷(xiao)式(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)、循環球-齒(chi)條齒(chi)扇式(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)、循環球曲(qu)(qu)柄指銷(xiao)式(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)、蝸(gua)桿滾輪式(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)等(deng)。按照助(zhu)力(li)(li)形式(shi)(shi)又(you)可(ke)以(yi)分(fen):為機(ji)械式(shi)(shi)(無助(zhu)力(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi),和動(dong)(dong)力(li)(li)式(shi)(shi)(有助(zhu)力(li)(li))轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)兩種(zhong),其中(zhong)(zhong)動(dong)(dong)力(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)(qi)又(you)可(ke)以(yi)分(fen)為氣(qi)壓(ya)動(dong)(dong)力(li)(li)式(shi)(shi)、液壓(ya)動(dong)(dong)力(li)(li)式(shi)(shi)、電(dian)動(dong)(dong)助(zhu)力(li)(li)式(shi)(shi)、電(dian)液助(zhu)力(li)(li)式(shi)(shi)等(deng)種(zhong)類。
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