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What is a Low Bed(Low Boy)semi-trailer? Mar,30 2022

1.Application of low bed trailer.

Low bed semi-trailer (also call low boy semi-trailer ) is usually used to transport heavy truck (e.g., Tractor truck, Buses and special vehicles, etc.), rail vehicles, mining machinery, forestry machinery, agricultural machinery( such as excavators, bulldozers, loaders, paver, cranes etc.) and other heavy cargos.
The center of gravity of low bed trailer is lower, the stability and safety is better, have stronger ability to transport over height cargo and go through overhead obstacles.

2.Structure and loading method.

The low bed trailer usually adopts the concave beam type (or well type) frame. As the front part of the frame is the goose neck (The Kingpin in front part of goose neck is connected with the fifth wheel in tractor truck and the rear part of the goose neck is connected with the trailer chassis), the middle part is the cargo platform (the lowest part of the frame), and the rear part is the wheel frame (including the wheels).
When loading mechanical equipment on a low bed semi-trailer, it is usually to load the equipment from the rear part of the trailer, In other words, it moving the equipment from the rear wheel or removing the wheels, and then fixing the mechanical equipment on the se-mi trailer.


I. The series of Low bed trailer have flat type, concave beam type and tire exposed structure, the I beam adopt straight or goose neck type. The chassis of trailer is staircase type, have the specification of high stiffness and strength.
II. The cargo platform of low bed trailer is designed as low as possible, ensure the stability of transportation. It is suitable to transport kinds of construction machinery, large equipment and steel.
III. It adopts tri-axles balance type, biaxial balance type or rigid suspension. The low bed trailer equipped with mass balance piece between the front and rear leaf spring, which can make the deflection of the front and rear leaf spring change by the same amount, and make the front and rear axle are forced balance.

IV. The whole low bed trailer adopts advanced computer-aided design software to optimize the design the trailer flexibly and diverse, and we can design the dimension of cargo platform as the user's requirements to meet the transportation of various special goods.

low bed trailer

low bed trailer

low bed trailer

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