Semi-trailer parts, as the name suggests, refers to the semi-trailer used in a variety of parts, more common axles, suspension, leaf springs, legs, air chambers, storage cylinders, rims, tyres, relay valves, rope tighteners, spare wheel lifter, tie rods, towing pins, lights, etc., of which the towing pins, axles, tyres, rims, legs, suspension for the main outsourcing parts.

1、Traction pin

The main role of the traction pin is to connect the semi-trailer and the tractor, connected with the main vehicle traction seat, traction semi-trailer driving.

Currently on the market, the traction pin is mainly divided into four types, assembled 50, assembled 90, welded 50, welded 90, the user can be based on different models and the actual use of the purchase.

2, axle

Semi-trailer axle, also called axle assembly, the main role is to bear the weight, to maintain the normal movement of the semi-trailer on the road, connected to the frame through the suspension, and its two ends of the installation of the wheels, the car's dynamics, stability, carrying capacity and so on play an important role.

In general, when it comes to the power core of the semi-trailer, owners can easily think of the engine and transmission. But in fact, the axle is also one of the semi-trailer power core assembly, in the power transmission process plays a link role. If the axle is not well chosen, it directly affects the safe use of the vehicle.

3、Tyre

Tyres and road contact, bear the weight of the car, and semi-trailer suspension together, play a role in easing the impact, and the road surface to maintain good adhesion, improve the semi-trailer traction, braking and throughput. A semi-trailer if there is no wear-resistant, heat-resistant, durable tyre support, its safety performance and economic benefits can not be said.

Tyres are rubber products, in addition to wear and tear will also be natural aging, owners usually need to pay attention to the maintenance and inspection of tyres, timely cleaning debris, once found cracks and other timely replacement.

4, steel rim

Also called the hub, refers to the inner contour of the tyre to support the tyre, barrel-shaped, centre mounted on the axle parts, is an important part of the semi-trailer. Semi-trailer driving process will produce transverse and longitudinal loads, accompanied by driving torque and braking torque, so the wheel hub needs to withstand a significant portion of the load, longitudinal and transverse vibration should be small, the amount of loss of weight and the moment of inertia should be small, stiffness, strength, precision should be high.

In order to adapt to market demand, many manufacturers are now launching steel rims have been improved, such as sealing structure design, simplified maintenance procedures, maintenance cycle extension, etc., owners can choose according to the needs at the time of purchase.

5, legs

Outrigger is a semi-trailer support device, the use of the principle of ‘standing wood jack’, located in the front of the semi-trailer frame for semi-trailers and tractor trailers detached from the use, as a dispersion of the force concentrated in the area of the important tools, its role is very critical.

6、Suspension

Suspension is a semi-trailer frame and the axle between the force transfer connection device, the role is to transfer the role of the wheels and the frame between the force and torsion, buffer by the uneven road surface to the frame or the body of the impact, reduce the vibration caused by this, in order to ensure that the car can drive smoothly.

Semi-trailer suspension can be divided into steel suspension, air suspension, rigid suspension and single-point suspension, of which, steel suspension is the highest application rate of ordinary semi-trailer in China. With the introduction and implementation of relevant regulations, the usage rate of air suspension is increasing, especially in the high-end transport field, the advantages of air suspension are more obvious, and more and more favoured by vehicle owners.

Shandong Zhengyang Machinery Co., Ltd. was founded in 2004, after many years of integrity management, currently has a group company Shandong Zhengyang Machinery Co. The group company is based on special-purpose vehicle industry, providing axles, suspension, brake drums, wheel hubs and other ancillary products and services, and can provide one-stop products and technical services for special-purpose vehicle chassis travelling system.