Card riders who often enter and exit the city should have seen flatbed wreckers. One of the characteristics of this wrecker is that the tablet can be lifted and tilted at a certain angle, and the rear edge of the tablet can be brought into contact with the ground while the tablet is in front of the tablet. There is also a winch, which can pull the transported vehicle directly onto the flatbed and carry it back.
Usually these wreckers are modified with light truck chassis to transport small cars such as cars. If it is said that the delivery of large cars or construction machinery, in addition to using a large wrecker to lift traction, and then may be the use of ordinary flat car or pallet car transported.
However, Americans who have always had a small brain hole have actually created a semi-trailer similar to the structure and function of a flat wrecker! Like the flatbed wrecker, it lifts the tilt plate and has a winch.
However, unlike the flat wrecker, the flat wrecker has a slide below the pallet that allows the flatbed to move backwards. This semi-trailer is to make the trailer axle move, and has the same effect.
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