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黑龍江工程學院本科生畢業(yè)設計
摘 要
驅動橋采用普通非斷開式驅動橋。它結構簡單、造價低廉、工作可靠，廣泛應用于各種載貨汽車。其特點是橋殼是一根支撐在左、右驅動車輪上的剛性空心梁，而齒輪及半軸等所有的傳動機件都裝在其中。采用組合式橋殼的單級主減速器。單級主減速器代替雙級主減速器可大大減小驅動橋的質量。其具有結構簡單、質量小、尺寸緊湊及制造成本低等優(yōu)點。差速器則采用對稱式圓錐行星齒輪差速器。差速器殼裝在主減速器從動齒輪上。結構簡單、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。整個橋殼由一個垂直結合面分為左右兩個部分，每一個部分均由一個鑄件殼體和一個壓入其外端的半軸套管組成。該結構的橋殼制造工藝簡單、主減速器軸承支承剛度好。
本設計從所設計的汽車的類型及使用、生產(chǎn)條件出發(fā)，并和所設計汽車的其他部件相適應，設計出既定用途的汽車的驅動橋，從而保證所設計汽車的最重要的使用性能的實現(xiàn)。
關鍵詞：低速貨車；驅動橋；設計；差速器；半軸
ABSTRACT
The 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
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