The general composition of car transmission

The basic structure of simple type transmission: Mix by part of housing, drive operate partial composition.

(1) housing: Housing is a foundation, entire part reachs transmission of bearing of installation of in order to deposit lube) . : What there is installation bearing on its is accurate bore hole. Transmission bears change load, the stiffness with due and so adequate housing, wall has strengthen, form is complex, it is cast more (material is casting pig, commonly used HT200) .

It is facilitating installation, transmission part and operate analyse of constant make it distributes the share type, box top and housing use bolt connection and locate reliably. Have on housing cheer, the mouth that put oil, fat face checks feet mouth, still should consider to come loose hot.

(2) drive part: It is to point to the drive such as gear, axis, bearing. Geometrical dimension of the axis decides through computation of intensity, stiffness. Because basically decide Yu Gang to spend, and carbolic steel and amount of model of alloy steel flexibility are approximately equal, use carbolic steel commonly so (commonly used 45 steel) . Only gear and axis make an organic whole or axial load just uses alloy steel badly. Axis and gear are spline connection more (good to neuter, can transfer power reliably, extruding stress is little wait for) . Spline part of the axis and put bearing to be in classics surface to quench processing. The axis is multi-purpose scroll bearing bearing, lubricant and simple, efficiency tall, bottom clearance is small, axial locates should reliable. Lubricant means is multi-purpose splatter (υ>25m ／ S, want viscosity to be able to swing the) on the wall aptly only.

(3) operates part: Main part is located in inside transmission lid.

2. Characteristic of structure of compositive type transmission is simple type transmission is businesslike tall, construction is used simply convenient your advantage mine but archives number is little, I span is small (small) of limits of traction, speed, appropriate counts not much certain lathe work to use in archives. If increase the scope of I, make transmission dimension is increased, axial span increases, to add shelf already number does not make axial span too great again, can use compositive type transmission. Transmission of alleged composition type, simple type transmission is combined and become by two normally, its are intermediate number is more say to give priority to transmission, less call deputy transmission.

Constitute the excellence of type transmission:

(1) can reduce gear several, and archives number reduces gear more more the advantage of several heals apparent. Be the same as simple type transmission to be compared, it can shorten axial length, reduce the external dimension of whole transmission and weight, and can get conveniently more than a reverse gear. When counting more than 6 archives into archives currently so, use compositive type transmission almost.