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: The gearbox alters the transmission ratio between the power unit and the main drive wheels, thereby changing the vehicle's traction and travel speed to meet operational and driving requirements.
: It allows the vehicle to move in reverse.
: When the gearbox is in neutral, the power from the engine to the drive wheels is cut off, allowing the engine to start. This also enables the vehicle to remain stationary for an extended period while the engine is running.
: In the case of all-wheel drive, the power from the engine is distributed to both the front and rear axles through the gearbox.
: It allows for speed and torque adjustments (note: coasting in neutral on a downhill is prohibited).
(1) Function of the Drive Axle:
Increase the torque transmitted from the engine.
Distribute torque to the left and right drive wheels while providing a differential function for both wheels.
Support various forces transmitted from the road surface and the vehicle frame.
(2) Structure of the Drive Axle:
Main Drive; Differential; Wheel-side Reducer; Brake; Axle Housing; Half Shafts
(3) Main Drive:
The main drive uses spiral bevel gears, which have a high load capacity and efficiency. Its function is to increase torque and change the direction of torque transmission.
(4) Differential:
The differential allows the drive wheels to rotate at different angular speeds when steering or traveling on uneven surfaces. It can be classified into:
(5) Wheel-side Reducer:
The wheel-side reducer features a planetary gear structure that further increases output torque.
(6) Brake:
The brake system employs fully enclosed hydraulic wet multi-disc brakes, providing smooth and reliable braking performance suitable for harsh working environments.
(1) Function of the Drive Shaft:
The drive shaft is primarily used for power transmission between two components that have non-concentric axes or experience relative positional changes during operation.
(2) Composition of the Drive Shaft:
Also known as a universal joint drive mechanism, it typically consists of universal joints, the drive shaft itself, and intermediate supports.
(3) Universal Joint:
Universal joints can be classified into two types: elastic and rigid. Rigid universal joints reliably transmit motion even when the angle between shafts changes, and they have a high transmission efficiency.
(4) Components of the Universal Joint:
The components include a lubrication nozzle, oil seal, needle bearing, bearing housing, gasket, cross shaft, and connecting flange.
(5) Connection Method of the Drive Shaft:
The connection methods include circular flanges and spline-type connections (C-shaped flanges).
(1) Tire
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(2) Rim
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