The articulated trailer is a highly versatile earth-moving machinery used in large-scale construction in the mining industry and various industries. Due to the particularity of its structure, it can adapt to harsh climates, extremely poor terrain and has high availability.
An articulated trailer is made up of two parts, front and rear, each with its own frame. The engine, its operating system, and cab are arranged in the front part; the body and dump device are arranged in the rear part, and the power part and the cargo part of the car are connected through hinge joints. The hinge joints are directly connected to the front or rear frame of the car. , after being connected to vertical hinges and horizontal hinges, the vehicle has good driving performance: one part of the car can be rotated to the left or right at a 45-degree angle relative to the other part in the horizontal plane, and it can also be "folded". In addition, both the front and rear frames can rotate independently and unrestrictedly around the common longitudinal axis in a plane perpendicular to the common longitudinal axis.
In particular, it completely eliminates the torsional load acting on the frame, so it can improve the reliability of the entire structure. Unlike ordinary cars when working under roadless conditions, the frame has to bear a large load; special suspension devices and The unique bogie allows the truck to drive normally on poor road surfaces and harsh weather conditions, allowing the vehicle to drive in rugged areas without placing excessive demands on the suspension device.
Because the two parts of the frame of the articulated truck form a folding angle when turning, the turning radius of the outer contour of the car is reduced, while the turning radius of the inner contour is increased, which allows it to pass in narrow passages; the two parts of the body can move relative to the public longitudinal direction. Axle rotation can significantly reduce wheel bounce in the vertical direction of the suspension system. The above factors necessitate the use of long and narrow carriages with sufficient depth.
Articulated trucks are more common in 2- and 3-axle models, most of which are all-wheel drive, and each axle is generally equipped with a differential lock;Large wide-section tires are usually used, and their ground contact pressure is small to ensure the vehicle's passability and stability on soft and wet soil. The dump truck box is made of high-strength steel, and the long-stroke hydraulic cylinder can make the truck box flip angle reach about 70 degrees. , to ensure smooth unloading of materials. Due to structural limitations, the load capacity of articulated trucks is generally within 50 tons, and the power of larger models is around 400 kilowatts.