【正文】 both sides of the axle and wheel related to swing through the flexible connected with the frame ponents. It consists of drive axle housing 1, the main reducer, differential and axle ponents. 2. disconnecttype drive axle. Drive the use of independent suspension bridge, that is the main reducer shell fixed on the vehicle chassis, on both sides of the axle and wheel in the horizontal plane as opposed to relative movement of the body is referred to as drive off the bridge. In order to match with independent suspension, the main reducer shell fixed at the frame (or body), the drive axle housing sub connected through the hinge, or in addition to the main reducer shell outside the shell is no longer driven to other parts of the bridge. Wheel in order to meet the needs of independent jump up and down, between the differential and the wheel axle of the above connection between the use of universal joints. Drive axle ponents Driven mainly by the main bridge reducer, differential, axle and drive axle housings and other ponents. 1. Main reducer assembly Used to change the main drive reducer general direction, to reduce speed and increase torque, and ensure there is sufficient car drivers and the appropriate speed skin. More types of the main reducer, a singlestage, dualclass, twospeed, such as Wheel Speed Reducer. 1) singlestage main reducer Reduction gear by a slowdown in the realization of the devices, called singlestage reducer. Its structure is simple, light weight, such as Dongfeng BQl090 type light and mediumsized trucks on a wide range of applications. 2) twostage main reducer Larger number of heavyduty trucks, require a larger reduction ratio, the main use of a singlestage reducer drive, moving from gear to be larger in diameter will affect the drive axle of the ground clearance, so the use of two slowdown. Often referred to as twostage reducer. There are two sets of twostage reduction gear reducer, speed the realization of the two by twisting. In order to enhance the meshing gear pair taper and strength of a smooth