What kind of axles are the axles on the trailer?

The axle is one of the key load-bearing components of the vehicle. The upper part is connected to the vehicle body through the suspension, and the two ends are used to install the wheels, which can not only support the weight of the vehicle body, but also maintain the normal driving of the vehicle on the road.

The axle can be integral, which looks like a big barbell, or it can be disconnected, like two umbrellas inserted on both sides of the vehicle body. According to the different driving methods, the axle can also be divided into drive axle, steering axle, steering drive axle and supporting axle.

In general, whether it is a semi-trailer, full-trailer or center-mounted axle trailer, its function is to provide cargo loading space. In most cases, it does not have the driving force and needs to use the power of the tractor to realize driving. Therefore, most trailer axles do not need It has a driving function and belongs to the supporting bridge, which can also be called a driven bridge.

The support bridge is a kind of integral axle, which is mainly composed of axle beam, camshaft, metal support seat, brake assembly, wheel end assembly and other components. The structural design is relatively simple, and the integral axle beam can provide greater Load bearing and torsion are often used in conjunction with non-independent suspensions to meet the transportation needs of the vehicle, and the daily maintenance is also more convenient. It is suitable for car owners who have high requirements for vehicle attendance.

Although trailer axles belong to supporting axles, their models and specifications are very diverse, which is also to meet the needs of different transportation conditions. In general, the common types of trailer axles mainly include the following:

Disc axles were mostly used on passenger cars in the past. After the GB7258 update, it is required that the three-axle fence and the warehouse semi-trailer must use disc brakes.

The biggest feature of the disc axle is its light weight, fast heat dissipation, fast braking response, good linear stability, and strong resistance to heat attenuation and water attenuation. The disadvantage is that the braking force is relatively small, and it is not suitable for heavy cargo transportation. Some transportation conditions that require high protection of goods, such as the transportation of hazardous chemicals, precision instruments, valuables, vegetables, fruits and flowers, are suitable for using disc axles.

The drum axle is the most familiar trailer axle for freight car owners, and it is also the most widely used on trailers. It can be used in almost all kinds of cargo transportation conditions that require little damage to the cargo. Its technical conditions are relatively mature, and the selling price is It is cheaper, and its accessories are universal, easy to buy and replace, and relatively convenient to maintain.

The drum axle has a sealed brake drum, which can provide more sufficient braking force, but the disadvantage is that the heat attenuation and water attenuation are more obvious, and the stability is not as good as that of the disc axle. In general, drum axles are especially suitable for heavy cargo transportation, such as coal, wood, sand and gravel, steel, cement, etc.

Low flat axles, special axles for large pallet trucks, are characterized by low ground clearance, low center of gravity, high wall thickness, and high strength. They can provide sufficient support, improve transportation stability, and enhance the convenience of loading and unloading goods. Generally, it is mostly used for the transportation of large and non-disassembled goods such as mechanical equipment, large tanks, building materials equipment, and power station equipment.

Concave axle, also known as eccentric axle, as the name suggests, its axle beam and the center of the wheel end are not on the same horizontal line, and the height of the vehicle chassis is further lowered through the inverted door font design.

The concave axle also reduces the height of the compartment to a certain extent, and can increase the loading space of the cargo compartment within the scope of regulations. It is mostly used on sedan cars, and some models that require the center of gravity of the vehicle can also be applied. The disadvantage is that the vehicle's ability to cope with complex road conditions is poor, especially on potholes and uneven roads, where it is easy to knock the chassis and has high requirements for transportation road conditions.

Three-wire six-axle axle, the axle model dedicated to large-scale transportation or extra-large-size transportation vehicles, has a super-load-bearing capacity, generally reaching about 80t. It can reach hundreds or hundreds of tons.

One of the most obvious features of the multi-axis axle is the large number of wheels and small size, which can reduce the average pressure at the contact point between the tire and the road surface, and reduce or avoid road damage.

Light trailer axles refer to support bridges with a tonnage of less than 10t. The common ones are 9t, 8t, 6t, 5t, 3t, and 1.5t. They are mainly used in fields such as farms, residences, and field operations, such as station transport vehicles, luggage Transport vehicles, grain transport vehicles, manure spreading vehicles, forage pickup vehicles, trailer-type RVs, camping vehicles, power equipment trailers, yacht trailers, motorcycle trailers and other models have the common feature of light tonnage and various top designs. , The functions provided are also different, which leads to many differences in its production parameters, and the accessories are small, so the production tends to be customized.

DARO Axle is one of the first trailer axle companies established in the Liangshan special vehicle production base. It has been specialized in the R&D and manufacturing of trailer axles for more than 20 years, and has achieved fruitful results in the fields of high load-bearing bridge poles, lightweight axles, and customized production. The products are diversified and have passed the ISO9001 quality management system certification, and have been exported to Europe, America, Australia and other countries many times.