2. Disadvantages: complex manufacturing process, high precision requirements, difficult assembly and installation, inconvenient maintenance, and it is rarely used at present.
The cross section of the central beam can be made into a tube, a trough or a box. The front end of the center sill is made into an extended bracket to fix the engine, and the main reducer housing is usually fixed at the rear end of the center sill to form a disconnected rear drive axle. The bracket suspended from the center sill is used to support the car body and install other parts. If the center sill is tubular, the drive shaft can pass through the tube.
The English name of the central BackBone pipe rack is backbone, which was specially developed by the famous designer Hans Redving Ka in 1923 for Taituo T 1 1 car. After improvement, the system adopts 6X4 design.
And it was installed on the T-26 truck, which had excellent off-road ability in the car at that time. From the above picture, we can intuitively see that both models have a unique "inner eight" feature, which is too procrastinating.
The central spinal canal frame is divided into two parts. First, it is the "backbone" pipe that runs through the center of the vehicle. The "backbone" tube integrates the transfer case, connects three axles in different positions in parallel, and tightly wraps the transmission system.