Take you to understand the composition of ordinary semi trailer

They say horses should be saddled, and the same goes for our trucks. Especially for the tractor, what kind of trailer is selected for the stability, safety and economy of the vehicle is equally important. This issue of our trailer for an autopsy, a detailed introduction to the various components of the trailer, so that you have a clear understanding of their own trailer. Minutes to take you to understand the composition of an ordinary semi trailer

● Frame

The frame is mainly composed of girders -- welded I-beams, support beams, connecting beams, side beams, locks, traction pin connection devices, panels, etc.

Side beams are generally channel steel or bent pieces. At present, most trailers use channel steel. Light body hanging bent pieces side beams will be more, because the requirement for strength is not too large. Support beam is through the beam, now most are W beam (above is W beam to do through the beam), heavy goods only use more than 10# channel steel.

● Top part

For the pallet car, the top part refers to the bar plate, gantry frame, etc. The fence plate is divided into flat plate and vertical corrugated plate, vertical corrugated plate is a typical board, the strength will be higher.

Gantry can also be called "front stop", generally not special requirements of the manufacturer will be removable, so often pull heavy goods and easy to slide goods must be welded to the gantry frame on the basis of two cable-stayed.

● Traction pin

The traction pin is an important component for the semi-trailer to connect with the tractor and bear the traction force, and is connected with the traction seat. It is generally made of steel of chrome alloy structure.

There are 50# traction pins and 90# traction pins for different cargo tonnage. Generally, the total weight of 50T trailer and goods is limited. Below 50T, 50# pin is used. Above 50T, 90# pin is used.

● Suspension system

General plate semi-trailer suspension is the use of non-independent steel plate stamping type rigid suspension, with series leaf spring and suspension support, used to support the load, slow down the impact of dynamic load.

Because of the different use of special vehicles, there are different requirements for the design of suspension. There are four kinds of suspension commonly used: series-connected steel plate spring balance suspension, single point suspension, air suspension, rigid suspension (one line two axles).

● Walking part

The axle of semi-trailer is the support bridge, which is mainly Guangdong Fuhua bridge, BPW bridge, York Bridge and Enbridge in China. Among them, Guangdong Fuhua Bridge Z is popular. The axle is connected with the frame by plate spring, pull rod and suspension device to support and transfer the force of load between the frame and the wheel.

● Underwire tires

The steel ring and the tire are equivalent to the shoes that people walk in. The steel ring and the tire should be matched according to the standard.

● Electrical System

The electric system of the trailer is composed of seven-core socket, cable, gas circuit and various lamps and lanterns, which are used for lighting, safety warning and gas supply for the brake, etc. Generally, we know the quality of the factory by looking at the regularity of the electrical wiring. This is to see the big.

● Support device

The supporting device of the self-discharging semi-trailer is mainly used to support the trailer when the suspension is off. It is composed of legs and connecting brackets. There are many brands, York, Pasmark, Fuhua, Jost and so on are very good leg, can not see the brand is also a lot, because this thing is too easy to manufacture, generally will not break!

● Protective device

The trailer protection device is composed of side protection and rear protection to protect pedestrians and other vehicles from drilling under the semi-trailer. If this thing is done well, it also saves fuel. If it reduces wind resistance well, it is called side skirt board. In foreign countries, it can be done like this, but in China, if it is made into side skirt board, it is called "modification" and will be punished.

● Trailer accessories

Other accessories on the semi trailer include toolbox, spare tire frame, gantry frame, pile, etc. There are small accessories such as rope tightener, rope hook this kind of functional accessories, it is necessary to select according to their own kind of goods.