The bulldozer gearbox primarily transmits engine speed and torque to the vehicle's tires, enabling adjustments to speed and driving force. Its working principle can be summarized as follows:
1. Engine power transmission to gearbox: The engine transmits its rotational power to the gearbox's input shaft via the transmission system.
2. Gear transmission: The gearbox contains multiple sets of gears that transmit power through meshing and rotation. The main gear components include input shaft gears, output shaft gears, and intermediate gears.
3. Friction clutch: The gearbox also features a friction clutch to control the transmission of rotational power. When the friction clutch is engaged, power is transmitted to the output shaft via gears, propelling the vehicle forward; when the friction clutch is disengaged, power transmission is interrupted, and the vehicle stops or enters neutral.
