How many types of trailer axles are there? How to distinguish between drive axle, steering axle and support axle?

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The axle is a very important part of the trailer, which is responsible for the driving, steering, load-bearing, driving and other functions of the trailer. It can be said to be the walking system of the trailer.

Under normal circumstances, according to the different driving methods, the axles can be divided into steering axles, drive axles, steering drive axles and support axles. Among them, the steering axle and the supporting axle are both driven axles, that is, they do not have the driving function themselves. At present, most trailers use the front front drive, the front axle, that is, the axle of the tractor, undertakes the steering drive function, and the rear axle mainly plays the load-bearing support function.

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Trailer Axle classification and structure:

1. Steering axle.

The steering axle is usually located on the trailer tractor, so it is also called the front axle. Its structure is basically the same, consisting of two steering knuckles and a beam, and the wheels are mounted on the steering knuckle. When turning, the wheels at both ends are deflected by a certain angle through the steering knuckle to realize the steering of the vehicle.

In general, the steering axle of a trailer should not only bear the steering function, but also bear the moment caused by the longitudinal force and the lateral force.

2. Drive axle.

The function of the drive axle is mainly to distribute the torque of the engine to the left and right drive wheels after reducing the speed and increasing the torque and changing the direction of power transmission to drive the vehicle. . If classified according to the structure, it can be divided into integral drive axle and disconnected drive axle. Currently, the freight vehicles sold by Shanghai Trailer generally use integral drive axles.

(1) The integral drive axle adopts non-independent suspension. The drive axle housing is a rigid whole. Both ends of the drive axle are connected to the frame through the suspension. Achieve independent beating. When the wheel on one side encounters a bump on the road, the drive axle and the body will jump or tilt accordingly.

(2) The disconnected drive axle adopts independent suspension, the main reducer is fixed on the frame, the front axle is the front sub-frame, both ends are connected to the frame through the upper and lower swing arms, and the half shaft also passes through the universal joint in sections. section connection. Therefore, the drive wheels on both sides can be run independently of each other. Generally more widely used in passenger cars.At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.

3. Steering drive axle.

After understanding the steering axle and the drive axle, the steering drive axle is easier to understand. Its structure includes both the main reducer, differential and half shaft that the general drive axle has, as well as the steering knuckle that the steering axle has. And the king pin, etc., mainly undertake the functions of steering and driving.

4. Support bridge.

Generally speaking, the trailer axle refers to the support bridge, which is used on the trailer behind the tractor.

Support axles can be subdivided into disc axles, drum axles, low flat axles, special axles, concave axles, three-line six-axle axles, etc. Among them, the most widely used are disc and drum axles. and low slab axles.

(1) Disc axle.

The biggest feature of the disc axle is that the brake disc is exposed and the heat dissipation is fast. When the trailer brakes continuously, the temperature will not be too high to avoid brake failure. Compared with the drum axle, the braking is more sensitive and stable, which is beneficial to protect the goods and reduce the damage of the goods. In addition, the disc axle is also the type of axle that is mandatory for the three-axle warehouse Fence Trailer. But some heavy vehicles require a hydraulic retarder to use disc axles.

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(2) Drum axle.

Drum axles feature sealed brake drums with larger pads for greater braking force, making them more suitable for heavy-duty transport vehicles. However, because of its sealed brake drum, the heat dissipation is poor. In order to avoid thermal decay, a water spray device needs to be equipped to cool it down during continuous braking.

(3) Low flat axle.

Low flatbed axles are mainly used in low flatbed trailers. Since they are often used to transport heavy loads, they have higher requirements on the bearing capacity and stability of the axles. Therefore, the height of the low-plate axle is generally smaller than that of the ordinary axle. On the one hand, it can lower the center of gravity and improve the stability, and on the other hand, it is convenient for loading and unloading of goods. The axle body and axle housing of the low-plate axle need to be reinforced to ensure its heavy-duty performance.

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Shanghai Trailer Heavy Industry Co., Ltd. is a growing company engaged in trailer manufacturing and trailer accessories and equipment. Shanghai Trailer is focused on becoming an international partner in modern transportation, dedicated to manufacturing industry-leading trailers and truck equipment to customers worldwide.

With Trailer manufacturing as its core business, Shanghai Trailer is growing and expanding into new markets around the world, products include container semitrailer, low bed semitrailer, tank Semitrailer, dump Semitrailer, Cargo Semitrailer, tractor trailer and various special vehicles. Over the years, Shanghai Trailer has enjoyed a reputation and share in China′s domestic Trailer industry. Today, Shanghai Trailer is expanding internationally and is exported to 59 countries. As a growing company, Shanghai Trailer′s products have become one of the most innovative flagship products in the industry through its forward-looking business approach and extensive detail about superior product quality.

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