Flatbed trucks are also called flatbed trailers, bulldozer trucks, excavator trucks, flatbed trucks, hook machine trucks, excavator flatbed trucks, excavator flatbed trailers, excavator trailers, excavator plate trucks, hook machine flatbed trucks, hook machine flatbed trailers, etc., which are used to transport some non-detachable machinery like excavators, loaders, harvesters, etc.

Trailer flatbed transport truck, also known as flatbed trailer, semi-trailer construction machinery transport vehicle usually adopts concave beam type (or well-type) frame, both the front section of the frame is the gooseneck (the towing pin of the front section of the gooseneck is connected with the traction saddle on the tractor, and the rear end of the gooseneck is connected with the semi-trailer frame), the middle section is the cargo platform (the lowest part of the frame), and the rear end is the wheel frame (including wheels). When loading mechanical equipment on the semi-trailer construction machinery transport vehicle, the mechanical equipment is usually loaded from the rear end of the semi-trailer, that is, the mechanical equipment is moved from the rear wheel frame or the wheel is removed, and then the mechanical equipment is fixed on the semi-trailer.