狼群视频在线

方向機總成簡介

轉(zhuan)向(xiang)(xiang)機總(zong)成即轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)，又名轉(zhuan)向(xiang)(xiang)機、方(fang)向(xiang)(xiang)機，它(ta)是(shi)轉(zhuan)向(xiang)(xiang)系中最重要的部(bu)件。它(ta)的作用是(shi)：增大轉(zhuan)向(xiang)(xiang)盤(pan)傳(chuan)到(dao)轉(zhuan)向(xiang)(xiang)傳(chuan)動(dong)(dong)(dong)(dong)機構(gou)的力(li)(li)(li)(li)和改變力(li)(li)(li)(li)的傳(chuan)遞方(fang)向(xiang)(xiang)。轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)的操(cao)(cao)縱是(shi)全液壓(ya)式(shi)(shi)(shi)，也就(jiu)是(shi)說在轉(zhuan)向(xiang)(xiang)柱和轉(zhuan)向(xiang)(xiang)輪之間(jian)沒有(you)機械連接，在轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)與(yu)轉(zhuan)向(xiang)(xiang)油(you)(you)缸之間(jian)是(shi)液壓(ya)管(guan)或軟管(guan)鏈接。當(dang)轉(zhuan)動(dong)(dong)(dong)(dong)方(fang)向(xiang)(xiang)盤(pan)，轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)根據方(fang)向(xiang)(xiang)盤(pan)轉(zhuan)動(dong)(dong)(dong)(dong)比例輸送相(xiang)對的油(you)(you)量，該油(you)(you)量直(zhi)接流到(dao)操(cao)(cao)縱缸相(xiang)應(ying)一側，同(tong)時另一側的油(you)(you)量回到(dao)油(you)(you)箱。轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)按結構(gou)形(xing)式(shi)(shi)(shi)可分為：有(you)齒輪齒條(tiao)式(shi)(shi)(shi)轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)、蝸(gua)桿曲(qu)柄指(zhi)銷式(shi)(shi)(shi)轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)、循環(huan)球-齒條(tiao)齒扇式(shi)(shi)(shi)轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)、循環(huan)球曲(qu)柄指(zhi)銷式(shi)(shi)(shi)轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)、蝸(gua)桿滾輪式(shi)(shi)(shi)轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)等。按照(zhao)助(zhu)力(li)(li)(li)(li)形(xing)式(shi)(shi)(shi)又可以(yi)分：為機械式(shi)(shi)(shi)（無助(zhu)力(li)(li)(li)(li)）轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)，和動(dong)(dong)(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(shi)（有(you)助(zhu)力(li)(li)(li)(li)）轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)兩種，其中動(dong)(dong)(dong)(dong)力(li)(li)(li)(li)轉(zhuan)向(xiang)(xiang)器(qi)(qi)(qi)(qi)又可以(yi)分為氣壓(ya)動(dong)(dong)(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(shi)、液壓(ya)動(dong)(dong)(dong)(dong)力(li)(li)(li)(li)式(shi)(shi)(shi)、電動(dong)(dong)(dong)(dong)助(zhu)力(li)(li)(li)(li)式(shi)(shi)(shi)、電液助(zhu)力(li)(li)(li)(li)式(shi)(shi)(shi)等種類(lei)。

雷克薩斯RC簡介

雷克(ke)薩斯(si)(si)RC是豐田汽車旗下的高價品牌雷克(ke)薩斯(si)(si)于(yu)2014年(nian)(nian)所推出(chu)的雙門(men)四人座跑車，于(yu)2013年(nian)(nian)東京車展(zhan)正(zheng)式發(fa)布。2018年(nian)(nian)3月，雷克(ke)薩斯(si)(si)發(fa)布了一組RC 300h F Sport黑色限量版(ban)車型官圖，新車采用了大量的黑色元素。該車將在2018年(nian)(nian)3月的日內瓦車展(zhan)正(zheng)式亮相(xiang)。