Sinomada 30 Ton Crawler Excavator Xe305D with Qsb7 Engine

Based on the full absorption of internationally advanced technology and relying on independent innovation, XE305D hydraulic excavator has fully solved many key technologies of 30-ton hydraulic excavator. The fully upgraded XE305D hydraulic excavator has more power, lower fuel consumption and stronger working performance. It can be widely used in farmland water conservancy, river dredging, municipal construction and small mine construction, and can also realize different operations such as excavating, breaking and dismantling. The adaptability of working conditions has been further strengthened.

Adopting proprietary matching technology, the operation efficiency is higher, the fuel consumption is smaller, and the oil efficiency ratio is ahead of the same tonnage model at home and abroad. After continuous optimization and improvement of the hydraulic system, the maneuverability is further enhanced, the control is more precise, and the leveling and loading performance is better.

The whole machine adopts imported 169kW high-power engine, proprietary and exclusive technology, featuring low speed and high torque, high-pressure injection, stronger power and better fuel economy. New high-efficiency main pump is fully upgraded, with large displacement, which is 7% higher than that of the previous generation. High efficiency, and leakage is reduced under the same pressure. Swashplate swing angle makes power density increase, and achieves much more work. With new generation of high efficiency main valve, the overflow pressure is increased, the pressure loss is smaller, and the working ability is more outstanding. The new safe operation lever can prevent vehicle movement caused by misuse from causing personal injury, and is more safe and reliable. The latest power matching technology and optimized fuel power curve can save up to 7% fuel. Adopting whole brazing technology and new-type radiator welded by robots, and configuring positive pressure degassing type expansion tank, to improve the pump life, quickly remove the gas within engine and waterway, reduce the rust, and it can meet 50ºC environmental requirements.

The turntable adopts a rigid box structure to provide higher strength and improve the cab shock absorption. The engine mounting base structure is strengthened to improve shock absorption. With main body adopting I-beam rigid structure, the whole machine’s strength is intensified, and the turntable side beam adopts the D-tube structure to improve its ability to resist external impact. The main body of the turntable adopts robot welding technology to improve the durability and safety of the structural parts.

The travelling mechanism adopts strengthened key parts of the chain rails bearing stress to improve the strength and impact resistance of the chain rails, and the service life of the track is greatly improved. The butter dish is changed from welding parts to integral stamping parts, which ensures the installation roundness of the sealing ring, prevents the sealing ring from wrinkling and improves the sealing performance. With strengthened X-beam section, and the strength of the end face is greatly improved by increasing the size, thickness and structure of the box beam.

A new generation instrument has an 8-inch large screen display (the largest one among the industry). The page layout is more detailed and the picture is clearer. The new control system uses CAN bus, the monitor is responsible for display, the controller is responsible for signal acquisition and output, and the bus connects with monitor, GPS controller, engine ECM, which can achieve faster data management and more efficient control.

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