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Detailed classification and introduction of semi-trailers (b)

Apr 11, 2019


Tank semi-trailer:

The semi-trailer of the tank type semi-trailer cargo structure is a tank structure. Mainly used for transporting liquids, bulk materials and bulk cement. 1. Tank truck series are divided into tank trucks, concrete mixer trucks, powder materials and bulk cement trucks, water supply vehicles, etc. 2. The tank body is manufactured through three-dimensional design and advanced processing technology. The chassis uses a dedicated chassis from various manufacturers, with advanced technology and reliable performance. A truck with a canned container. Advantages: high efficiency in loading and unloading. Guarantee the quality of the goods. Conducive to transportation safety. Reduce labor intensity and improve loading and unloading conditions. Save packaging materials and save labor. Reduce transportation costs. Liquid tank car: Shipment of fuel, lubricating oil, acid, alkali, water, food and beverage, etc. Powder tank car: transport cement, flour, stone powder, etc. Gas tank cars: transporting nitrogen, argon, petroleum gas, etc., particle tankers: shipping grain, beans, granular plastics and other granular items. Other special tankers: concrete mixer trucks, sprinklers, sweepers, etc. According to the use pressure in the container, the tanker is divided into: low-pressure tanker (the internal pressure of the tank is generally below 0.09Mpa. Mainly filled with water, light fuel oil, etc.) medium pressure tanker (the internal pressure of the tank is generally 0.147-0.294Mpa) High pressure tankers (mainly caustic soda, asphalt, etc.) (the internal pressure of the tank is generally 1.177-3.532Mpa).

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The load of the trailer is entirely borne by itself, and the locomotive is only connected by a hook. The locomotive does not need to bear the trailer load, but only provides power to help the trailer overcome the road frictional resistance. In long-distance transportation, it is common to hang a car behind a truck (or more than one), which is a full trailer. The 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 airfoil of the straight beam frame rails is straight. The utility model has the advantages that the bottom plate of the trailer cargo bed is flat, the manufacturing process is simple, the ground clearance is generally high, and the longitudinal passability is good. Heavy-duty flatbed trailers are designed to meet their structural and operational requirements. The frame is mainly composed of main beam, beam, support beam and side beam. The load of the entire vehicle is transmitted to the ground through the support beams, suspensions, wheel axles and wheels between the beams. The frame main beam, the support beam and the side beam are box-shaped welded parts with large torsional rigidity. The beam connecting the main beam protrudes to both sides, and is a cross-section I-shaped welded structure with high transverse bending strength. The height of the main beam of the frame is large and extends downwards, so that the frame can increase the longitudinal bending strength of the frame without increasing the height of the cargo platform. A turntable mechanism for mounting a balance suspension is disposed under each of the support beams to achieve all-wheel steering. The goods shipped on heavy-duty trailers are of high quality and large in size. Generally speaking, the strength of the frame should be increased to minimize the height of the frame so that the goods can be loaded and unloaded and transported. The trailer frame has a straight-through frame, a stepped frame and a concave beam frame according to the structure of the longitudinal beam.