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轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機總成即轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)，又名轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機、方(fang)(fang)向(xiang)(xiang)(xiang)機，它是轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系中最重要(yao)的部件。它的作用是：增大轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)盤(pan)(pan)傳到轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)傳動(dong)機構(gou)的力(li)(li)和(he)改變力(li)(li)的傳遞方(fang)(fang)向(xiang)(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)的操(cao)(cao)縱(zong)是全液(ye)壓(ya)式(shi)(shi)(shi)(shi)(shi)(shi)，也就(jiu)是說在(zai)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)柱和(he)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)輪(lun)之間(jian)沒有(you)機械連接，在(zai)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)與轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)油(you)缸之間(jian)是液(ye)壓(ya)管或(huo)軟管鏈接。當(dang)轉(zhuan)(zhuan)(zhuan)動(dong)方(fang)(fang)向(xiang)(xiang)(xiang)盤(pan)(pan)，轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)根據方(fang)(fang)向(xiang)(xiang)(xiang)盤(pan)(pan)轉(zhuan)(zhuan)(zhuan)動(dong)比例輸(shu)送相(xiang)對的油(you)量(liang)，該(gai)油(you)量(liang)直接流到操(cao)(cao)縱(zong)缸相(xiang)應一側，同時另一側的油(you)量(liang)回到油(you)箱。轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)按(an)結構(gou)形式(shi)(shi)(shi)(shi)(shi)(shi)可(ke)分為(wei)：有(you)齒(chi)(chi)輪(lun)齒(chi)(chi)條式(shi)(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)、蝸(gua)桿曲柄指銷(xiao)式(shi)(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)、循(xun)環球(qiu)(qiu)-齒(chi)(chi)條齒(chi)(chi)扇式(shi)(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)、循(xun)環球(qiu)(qiu)曲柄指銷(xiao)式(shi)(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)、蝸(gua)桿滾輪(lun)式(shi)(shi)(shi)(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)等。按(an)照助(zhu)(zhu)(zhu)力(li)(li)形式(shi)(shi)(shi)(shi)(shi)(shi)又可(ke)以分：為(wei)機械式(shi)(shi)(shi)(shi)(shi)(shi)（無助(zhu)(zhu)(zhu)力(li)(li)）轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)，和(he)動(dong)力(li)(li)式(shi)(shi)(shi)(shi)(shi)(shi)（有(you)助(zhu)(zhu)(zhu)力(li)(li)）轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)兩種，其中動(dong)力(li)(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)又可(ke)以分為(wei)氣(qi)壓(ya)動(dong)力(li)(li)式(shi)(shi)(shi)(shi)(shi)(shi)、液(ye)壓(ya)動(dong)力(li)(li)式(shi)(shi)(shi)(shi)(shi)(shi)、電動(dong)助(zhu)(zhu)(zhu)力(li)(li)式(shi)(shi)(shi)(shi)(shi)(shi)、電液(ye)助(zhu)(zhu)(zhu)力(li)(li)式(shi)(shi)(shi)(shi)(shi)(shi)等種類。
北京BJ30正式上市，售價1.6萬元起，縱(zong)使硬漢也有(you)絲柔(rou)情北京BJ30將于4月16日(ri)正式上市(shi)，共推出三款(kuan)車型：先鋒版、俠客版和至尊版
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