China 3 Axles 50 Tons Loading Dolly Full Trailer For Bulk And 20 Feet Container

What is Heavy duty Full Trailer?

The load of the trailer is fully borne by itself, and it is only connected to the locomotive with a hook. The locomotive does not need to bear the trailer load, but only provides power to help the trailer overcome the frictional resistance on the road. Full trailers are mainly used for

transportation in terminals, factories, and ports.

There are many types of full trailers, and their basic frames, bodies, and walking systems are basically the same as trucks. The rail car is generally made of thin steel plates. The longitudinal rails are punched out on the rails of the rails, and the ribs are welded in the transverse direction to increase the rigidity of the rails and reduce the mass of the rails. , Or iron-wood mixed structure floor; the frame is usually made of 16Mn steel plate, welded or willow jointed by pressing. The longitudinal and cross beams of the frame mostly adopt a grooved interface structure, and the two longitudinal beams are arranged at the same width in front and back, so that the frame has better bending resistance.

A full trailer is generally composed of a frame, a body, a traction device, a steering device, a suspension, a walking system, a braking system, and a signal system. The upper wing surfaces of the straight beam frame longitudinal beam are straight. The advantages are that the bottom floor of the trailer cargo platform is flat, the manufacturing process is simple, the ground clearance is generally high, and the longitudinal passability is good. In order to meet the structure and use requirements of heavy flatbed trailers. The frame is mainly composed of a main beam, a cross beam, a support beam and a side beam. The load of the entire vehicle is transmitted to the ground through the support beams, suspensions, wheel axles and wheels between the cross beams. The main beam, support beam and side beam of the frame are welded parts with box-shaped cross-sections, and have large torsional rigidity. The beams connecting the main beams protrude to both sides, and they are I-shaped welded structures with variable cross-sections, which have high transverse bending strength. The height of the main beam of the frame is relatively large, and it extends downward, so that the frame can improve the longitudinal bending strength of the frame without increasing the height of the cargo platform. Below each support beam is a turntable mechanism installed with a balanced suspension to achieve all-wheel steering.

The quality of heavy-duty trailers is large, and the dimensions are also large. Generally speaking, the strength of the frame should be increased, and the height of the frame should be reduced as much as possible to facilitate the loading and unloading and transportation of the cargo. According to the structure type of the longitudinal beam of the trailer frame, there are a straight-through frame, a stepped frame and a concave beam frame.