The movement principle of bevel gear differential gear of planetary gear is briefly described
In addition to the 2.5 axle gear, there are two planetary gears. Understanding the state of the two planetary gears is key to understanding the differential principle. Take an example of what the ball said. The two gears are opposite and perpendicular to the axle shaft. They correspond to the 6 o'clock and 12 o'clock positions. The two gears often rotate in opposite directions, thus achieving differential action. In the process of autobiography, the shell will rotate with two gears.Although the four gears mounted inside the housing but can be independent of differential rotation of the housing, but they are meshed together on both sides of each gear are engaged with the other two gear (each half shaft gear will bite the two planetary gear planetary gear, each bite 2.5 shaft gear), as long as one of the gear rotation will involve the other three gears to rotate together, and one of the gear in one direction of rotation, and the other side gear it must move in the opposite direction of rotation relative! This phenomenon can be proved by experiments: if the two driving wheels of one vehicle are left vacant, the wheels on the other side of the wheel will be turned, and the other side of the wheel will turn in the opposite direction.
Operation principle of differential:Straight running is characterized by about the same drag on both sides of the drive wheel. The power output from the engine is first transmitted to the differential housing so that the differential housing begins to rotate. Next to the power transfer from the housing to the left and right half axis, we can understand each other on both sides of the axle shaft gear in the "rivalry", because the wheels on both sides of the same resistance, so the two who are but breaking each other, so the planetary gear differential shell with shell revolution without rotation, two planetary gear bite 2.5 shaft gear rotates at the same speed, so that the car can run straight!
Differential structure:The core of the differential system is the four gear: two planetary gears and two half shaft gears connected to the drive shaft. The four gears are in the differential housing, which is connected to the drive shaft and rotates itself. The direction of its rotation is the same as that of the wheel when it is moving.Suppose that the sphere and the earth has two poles, and the polar axis line of autobiography, this sphere can be understood as the differential shell, the shell of the poles connected is the car left and right half shaft. The 2.5 axle gear is installed here, and the connection of the two gear center is the axis of the rotation of the differential case.
Why is the differential installed?The first thing to say is where the differential device is installed, and its position should be at the intersection of the drive shaft and the left and right axle. The power output from the gearbox is assigned to the left and right 2.5 shafts here. The speed of the two driving wheels is the same as that of the left and right sides of the car in a straight line, but the distance between the wheels on each side is not equal when turning, so the speed of the wheel will certainly be different. The differential action is to allow the driving wheel at the left and right to operate at different speeds.
