how to recognize semi trailer？
semi trailer and full trailers and Precautions
A semi trailer is a trailer whose axles are placed behind the vehicle’s center of gravity (when the vehicle is evenly loaded) and are equipped with hitches that transmit horizontal and vertical forces to the tractor. The semi-trailer is generally a three-axle semi trailer, and its types are divided into 11-meter warehouse semi trailer, 13-meter warehouse lantern, low-bed semi trailer and many other types. It is a heavy-duty transportation vehicle connected with the semi trailer head through a traction pin.
Compared with “monolithic” vehicles, semi trailer can improve the comprehensive economic benefits of road transportation. The transportation efficiency can be increased by 30-50%, the cost can be reduced by 30-40%, and the fuel consumption can be reduced by 20-30%. More importantly, the use of r can also promote the organizational form of my country’s logistics to a certain extent.
The semi trailer is mainly used to transport bulky goods that are not easy to disassemble, such as excavators, etc.
Different from full trailers, are trailers whose axles are placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and are equipped with a coupling device that can transmit horizontal or vertical force to the tractor. Trailer with one axle. Semi trailer refers to a vehicle that has no power itself and is jointly carried with the main vehicle and relies on the traction of the main vehicle.
Simply put, the full trailer is connected to the front truck with a hook. The semi trailer is connected to the traction seat of the tractor through the traction pin.
The common container transport vehicle is a typical semi-trailer, and the rear loading part is the semi trailer.There are also differences in use. Full trailers are mainly used for short-distance transportation in factories, ports, docks, warehouses, etc., while semi trailers are mainly used for long-distance transportation of goods.
Precautions：When turning a corner, pay attention to whether there are pedestrians in the blind spot of the viewing angle, especially those riding a battery car, which suddenly appear silently. Always check your tires before you travel.
When reversing, the direction is reversed, so you should drive slowly and return slowly, and the amplitude should not be too large.
If you go far away, it is necessary to check the vehicle. The things that must be checked include: the axle screw of the vehicle, the drive screw, the horn, the light, and the tire pressure. These are necessary. These are the places where accidents happen.
Be careful not to move the steering wheel too much while driving, because the body is long, and if you move too much, it may cause a rollover, and you should pay more attention to cornering. Try to make extra space to come, otherwise the tail will not be able to pass, and it will easily throw people.
Do not use the method of “leaving first and then braking” to break in the brakes. Although this can relatively reduce the impact on the engine when braking, it can be dangerous, and it is even worse once you get used to it. Finally, the company reminds everyone that the new car should always check whether the oil, coolant and battery electrolyte are sufficient during the running-in period, and if semi trailer is found to be lacking, it must be replenished in time. After reaching the mileage specified by the manufacturer, it is necessary to go to the service station in time for the first inspection and maintenance of the vehicle, change the oil, filter, etc., and comprehensively check the chassis system. After completing the first insurance, it imeans that the trailer has successfully passed the running-in period, and can serve you better from now on.