The automobile gear is an important part of the mechanical structure. Since the automobile came into being, the gear has occupied an important position in its structure. As the main component of the automobile structure, the automobile gear bears the responsibility of transmission mechanical energy. Now let's talk about the role of car gears in cars?
There are two types of gear drive: one is the combined transmission of worm and worm gear, and the other is the combined transmission of bevel gear. The transmission of worm and worm gear can obtain a large reduction ratio, which is usually used on trucks. The number of worm heads has one, two, three or four helices, and the transmission direction changes from the axial drive of the worm to the rotation of the worm gear. This transmission mode can change the transmission direction and transmit large torque, but the reversible transmission is very poor, so it is no longer used in modern high-speed vehicles. The transmission of bevel gear combination can not only change the transmission direction, but also obtain a large reduction ratio, which is adopted by ordinary vehicles. For hyperbolic gears used in passenger cars and light trucks, the driving gear axis can be placed below the driven gear axis, and the vehicle body and center of gravity can be lowered, which is suitable for high-speed vehicles.
The helical gear used in trucks has a relatively large helical angle. Like the hypoid gear, it has good smoothness in driving. Unlike the old conical spur gear, it only has side torque load when driving, and the transmission coefficient is relatively small. The hyperboloid helical gear 99 has both side drive torque and axial helical torque when it moves, playing a part of the role of worm drive worm gear, and its forward and reverse drive is also very free. Because of the above characteristics, the conical helical transmission gear is widely used in modern vehicles.