2493 低速載貨汽車驅(qū)動(dòng)橋的設(shè)計(jì),低速,載貨,汽車,驅(qū)動(dòng),設(shè)計(jì) 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì)I摘 要驅(qū)動(dòng)橋采用普通非斷開(kāi)式驅(qū)動(dòng)橋。它結(jié)構(gòu)簡(jiǎn)單、造價(jià)低廉、工作可靠，廣泛應(yīng)用于各種載貨汽車。其特點(diǎn)是橋殼是一根支撐在左、右驅(qū)動(dòng)車輪上的剛性空心梁，而齒輪及半軸等所有的傳動(dòng)機(jī)件都裝在其中。采用組合式橋殼的單級(jí)主減速器。單級(jí)主減速器代替雙級(jí)主減速器可大大減小驅(qū)動(dòng)橋的質(zhì)量。其具有結(jié)構(gòu)簡(jiǎn)單、質(zhì)量小、尺寸緊湊及制造成本低等優(yōu)點(diǎn)。差速器則采用對(duì)稱式圓錐行星齒輪差速器。差速器殼裝在主減速器從動(dòng)齒輪上。結(jié)構(gòu)簡(jiǎn)單、工作平穩(wěn)、制造方便是選擇它的主要原因。另外，采用可分式橋殼。整個(gè)橋殼由一個(gè)垂直結(jié)合面分為左右兩個(gè)部分，每一個(gè)部分均由一個(gè)鑄件殼體和一個(gè)壓入其外端的半軸套管組成。該結(jié)構(gòu)的橋殼制造工藝簡(jiǎn)單、主減速器軸承支承剛度好。本設(shè)計(jì)從所設(shè)計(jì)的汽車的類型及使用、生產(chǎn)條件出發(fā)，并和所設(shè)計(jì)汽車的其他部件相適應(yīng)，設(shè)計(jì)出既定用途的汽車的驅(qū)動(dòng)橋，從而保證所設(shè)計(jì)汽車的最重要的使用性能的實(shí)現(xiàn)。關(guān)鍵詞：低速貨車；驅(qū)動(dòng)橋；設(shè)計(jì)；差速器；半軸黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì)IIABSTRACTThe transaxle adopts the ordinary not-disconnecting-type transaxle. Because of its simple structure, cheap fabrication cost and reliability, it is applied widely. Its Characteristic is that the bridge shell is a rigidity hollow beam which is supported on the left and right wheels, gears, half-axis and other transmission components. The main gear box uses combined type single stage. The single stage compared to double one can reduce the quality of the transaxle a lot. It has many merits of simple structure, small quality , compact size, low production cost. The differential mass uses symmetrical type and circular cone planet gear. The shell of the differential device is assembled with the driven gear of the transaxle that it is has advantages of simple structure, steadily work and conveniently making. It uses separated type axis shell. The whole shell is divided in to left and right parts by vertical plane. Every part is made up of a casting shell and a semi-axis driven tube which is pressed in outside. This structure has advantages of simple manufacture craft and good supporting rigidity of main gear box bearing.This design is proceeded from the types, production and working of the truck. It is adapted to other parts of the truck design. At last, the set use transaxle of the truck is designed, to ensure the most important operational performance of the truck is realized.Key words: Low Speed Truck；Truck Driving Bridge；Design； The Differential Mass；Half-Axis