Main Structure and Features

1. Main Beams

This is the core component of the vehicle, typically welded together from two high-strength steel longitudinal beams and several cross beams. It forms the vehicle's "frame" and primarily bears the vehicle's weight.

2. Gooseneck / Kingpin

This raised structure at the front of the vehicle connects to the saddle of the tractor (front end) and bears a portion of the vehicle's weight.

3. Twist Locks

This is a hallmark feature of skeletal trucks. Installed at the four corners (and sometimes in the center) of the truck frame, it secures the container's corner fittings. The locks can be rotated 90 degrees manually or pneumatically to lock or release the container.

4. Landing Legs

This supports the front weight of the vehicle when the tractor is moving away.

5. Suspension and Axles

Usually single-axle, dual-axle, or tri-axle, the suspension system often uses leaf springs to ensure load-bearing capacity.