What Is A Skeleton Semi Trailer
What is a skeleton semi trailer？
The skeleton semi trailer is welded by longitudinal beam, cross beam and front and rear beams. The beam is stamped into groove shape with high quality steel, and the front and rear beams are welded rectangular sections. It is a container semi trailer frame, which can only be used to transport containers. An integral long beam is set at the middle container locking device to improve the bearing capacity of the container locking device.
Skeleton semi trailer is the smallest and lightweight metal trailer, which is most commonly used to transport containers, but it can also be used as hook loader for loading skip and other professional applications with correct accessories and supports. Since Standard Marine Containers come in many sizes, skeleton trailers can be specific to one specific size, can be expanded to accommodate multiple sizes, or have multiple twist lock positions to provide dimensional flexibility.
Specification and bearing capacity:
Containers are available in 20 foot, 30 foot, 40 foot, 45 foot and ISO multimodal sizes. The longest trailer can carry one 45 foot container or two 20 foot containers.
When loading containers, the locking device of the intermediate container can be lowered below the flat platform as required. When the traction device is separated from the trailer, its function is to support the ground and bear the front load of the semi trailer.
What does the skeleton semi trailer consist of?
There are two types of support devices: single acting and linkage, which are mainly composed of support plate, screw transmission mechanism, reducer shell and control handle. There are three kinds of suspension devices: single axle suspension, double axle suspension and three axle suspension with two sets of spare wheel carrier. The semi-trailer is equipped with two sets of spare wheel brackets, which are respectively installed on the left and right sides of the trailer frame, and is equipped with a spare wheel elevator.
Through multiple ISO locking positions, the trailer can be positioned to optimize the center of gravity. For example, when carrying a 20 foot container, it should be loaded in the center of the skeleton semi trailer, not in the front or back.
Axle and suspension of frame skeleton semi trailer:
The skeleton semi trailer has a maximum of 12 twist locks and at least four twist locks. It has 2-4 axles, one of which may be a lifting axle.
The number of axles and whether they are double or single depends on the purpose of the trailer. If only empty containers are moved, fewer axles and wheels are required to support the load.
Most new skeleton trailers have air suspension instead of mechanical suspension. Air suspension is more expensive, but provides a better driving experience.