Description of nine essential parts of semi trailer， Let's learn about it with Semi Trailer Manufacturers.
The semi-trailer frame is mainly composed of girders - welded I-beams, supporting beams, connecting beams, side beams, locks, traction pin connecting devices, panels and so on.
1
The side beam is usually channel steel or bending parts. At present, most trailers use channel steel. The side beam of light body hanging bending parts will be extra, because the requirement for strength is not too large. Support beam is through beam, now mostly W beam (above is W beam to do through beam), heavy goods only with 10# above channel steel.
2
For the rail car, the top part refers to the rail board, longmen frame, etc. Column board is divided into flat plate and vertical corrugated board. Vertical corrugated board is a typical board, the strength will be higher. longmen frame can also be called "front stop", usually no special requirements of the manufacturer will be removable, so frequently pull heavy goods and easy to slide the goods must be welded dead on the basis of the longmen frame plus two cabled.
3
The traction pin is an essential component of the semi-trailer connected with the tractor and bear traction force, which is connected with the traction seat. It is typically forged from steel of chrome alloy structure. For different cargo tonnage, there are 50# traction pins, 90# traction pins. Normally, the total weight of 50T trailer and cargo is limited to 50# pins below 50T, 90# pins above 50T, and 90# traction pins above 90T will be used as a precaution.
4
The general semi trailer suspension is the use of non-independent steel plate stamping type rigid suspension, a series of steel spring and suspension support composition, used to support the load, slow down the impact of the vehicle and cargo dynamic load. Due to the different use of special vehicles, there are different requirements for the design of suspension, suspension commonly used there are 4 kinds: tandem steel spring balance suspension, single point suspension, air suspension, rigid suspension (a line of two axes).
5
Semi trailer axle for the support bridge, the domestic is mainly Guangdong Fuhua bridge, BPW bridge, York bridge, Enbridge, Guangdong Fuhua bridge is the most popular, the axle through the plate spring and rod and suspension device and frame connected to support and transfer load force between the frame and the wheel.
6
The electrical system of the semi-trailer consists of seven-core socket, cable, air path and various lamps and lanterns, which are used for lighting, safety warning and air supply for brakes, etc. Usually look at the electrical wiring of the regular or not to essentially understand the quality of this factory how, this is to see the great.
7
The supporting device of semi-trailer is mainly used to support the trailer when it is unmounted. It is composed of supporting legs and connecting brackets. There are numerous brands. York, Paismark, Fuhua, Yost and so on are extremely excellent legs. I can not see the brand a lot, because this thing is too easy to manufacture too simple, usually not broken!
8
The semi trailer protection device is composed of side protection and rear protection to protect pedestrians and other vehicles from drilling under the semi-trailer. This thing is done to save fuel, reduce the wind resistance to do nicely is called the side skirt. In foreign countries, if made into a side skirt, it is called "modified" will be punished.
9
Additional accessories on the semi trailer include toolbox, spare tire frame, longmen frame, pile, etc. There are tiny accessories such as tight rope, rope hook such as strong functional accessories, that should be installed according to their own goods.