The firm JCB has mastered the three models in the category of load capacity of up to 20 m. Surprisingly, you’ll find very little mention of David Fowler on most websites. The company produces three models of Komatsu in the most widespread range of capacity from 25 to 40 tons of the number of created and produced models of Russian and Belarusian producers concede leading firms from foreign countries. To date, there was a clear concept of a Articulated dump trucks, which is characterized by the following fundamental design decisions. It is based on a modular layout scheme based on the principle of separation of motor and cargo modules, joined a special swivel device. The most widespread scheme with three wheel drive axles (wheel formula 6×6). Apply circuit-axle version (4×4), which machines are used to carrying capacity not exceeding 25 tonnes. Typically, the front module, which is mounted a motor unit has a uniaxial execution, and the rear cargo module – biaxial. As energy plants of medium diesel engines used liquid-cooled in-line and V-shaped arrangement of cylinders, equipped with a number of cases, turbochargers and intercooling charge air.
Applicable motors have high torque reserve (20 – 25%) and correspond to modern international standards on environmental emissions. Company Volvo, Caterpillar and Komatsu engines set their own production. The company uses Moxy engine company Scania, the company Bell – engines Mercedez Benz, firm Astra – Engines Iveco, a company Terex – Engines Cummins. Domestic manufacturers use motors of the Yaroslavl Motor Plant, firm Cummins and MTU. Type species transmission is a hydromechanical transmission with locking torque converter, planetary gearbox with automatic control, switching under load which creates 6 – 7 programs Forward and up to 3 gears – rear. Used transfer case with locking center differential mechanism with hydraulic retarders rate (used to work on the slopes). As a rule, use of all drive axles with differential lock. Locking mechanisms drive the wheels allow you to select the optimal modes of operation depending on soil conditions and workloads, up to a full lock all the differentials.