What are the components of a semi trailer?
Semi-trailer is a trailer whose axle is placed behind the center of gravity of the vehicle and equipped with a coupling device that can transfer the horizontal and vertical forces to the tractor. It has no driving force of its own and needs to be connected to the tractor with traction pins to achieve driving with the driving force of the main vehicle.
Compared with full trailer, semi-trailer is mainly used for long-distance cargo transportation, and can be subdivided in type. Different types of semi-trailer are not the same for transportation of goods. For example, dump semi-trailer is suitable for coal, ore, building materials and other loose goods transport, low plate semi-trailer is suitable for vehicles, machinery and other heavy cargo transport, warehouse grid semi-trailer is mainly used for agricultural and sideline products and other light bubble goods transport, tank semi-trailer is mainly used for the transport of liquid, bulk materials and bulk cement, etc. The van semi trailer can be used for the transportation of household appliances, light textile goods, building materials and drawing goods.
What are the parts of a semi trailer? Generally speaking, semi-trailer from the structure can be mainly divided into frame, top, traction pin, suspension system, walking mechanism, electrical system, support device, protective device and trailer accessories.
1. Frame, the main structure of loading goods, composed of girders, welded I-beams, support beams, connecting beams, side beams, locks, traction pin connection devices, panels, etc.
2. Install, finger rail plate, gantry frame, etc., auxiliary frame for loading goods.
3. Traction pin, which is an important component that connects the semi-trailer with the tractor and drives the trailer forward under traction.
4, suspension system, used to connect the frame and the axle of the device, mainly used to support load, slow down the impact of dynamic load, generally can be divided into steel plate suspension, single point suspension, air suspension, rigid suspension four, there are differences in performance, need to choose according to the purpose of the vehicle.
5, walking mechanism, mainly refers to the axle system, steel ring and tires, the main role is to bear and maintain the vehicle driving, support and distribution of load between the frame and the wheel. DARO trailer axles have been well received by users for their ultra-high cost performance and reliable quality.
6, electrical system, composed of cable, air circuit, lamps and lanterns, the main role is lighting, braking, safety warning.
7. The supporting device is used to support the semi trailer when it is unhung.
8, protection device, generally can be divided into side protection and rear protection.
9. Trailer accessories, such as tool boxes, spare tire frames, inserts and other small accessories.
Compared with monomer transport vehicles, semi-trailer has better comprehensive economic benefits, which can improve the transport efficiency by 30-50% and reduce the transport cost by 30-40%. It has played a certain role in promoting the organization form of the transport industry.
