A trailer axle, particularly one like the type described, works by using internal components to absorb shocks from the road, providing suspension for the trailer's wheels.
Understanding the Basics
Unlike axles on powered vehicles that transmit power, trailer axles are primarily structural components that hold the wheels and integrate with the trailer's suspension system. The description provided points to a common type known as a torsion axle.
How a Torsion Axle Works (Based on Reference)
The working principle involves the interaction of several key parts:
- Outer Structure: The reference mentions the outer square steel tubing. This is the main housing of the axle and is the part that is directly secured to the frame of the trailer. It remains stationary relative to the trailer body.
- Inner Mechanism: Inside the outer tubing is the inner square piece. This inner component is connected to the wheels via torsion bars. These torsion bars are essentially levers that pivot as the wheel moves up and down.
- Suspension Element: Between the outer tube and the inner piece are rubber cords. These cords are the crucial part of the suspension.
The process unfolds as follows:
- Wheel Movement: When the trailer wheel encounters uneven ground, like a bump or pothole, it moves up and down.
- Inner Bar Rotation: This movement of the wheel causes the torsion bar connected to it to twist or pivot. Since the inner square piece is secured to the torsion bars, the inner bar compresses the rubber cords along the length of their bearing surface.
- Shock Absorption: The compression of the rubber cords absorbs the energy from the wheel's movement. The natural elasticity of the rubber provides resistance and then returns to its original shape, cushioning the ride and preventing the full force of the impact from reaching the trailer frame.
Key Takeaways
- The outer tube is fixed, while the inner component rotates slightly.
- Rubber cords are compressed by this rotation, acting as the suspension medium.
- This system eliminates the need for traditional leaf springs or coil springs in many applications.
This type of axle provides independent suspension for each wheel, meaning the movement of one wheel has less impact on the other. They are often preferred for their compact design and durability.
