Aerospace Science and Technology High Power Hydraulic Transmission Technology reaches the international advanced level

The high-power hydraulic transmission is the core transmission component of major technical equipment. This transmission combines the characteristics of hydraulic transmission and mechanical transmission, which can realize stepless speed change, torque change and automatic adaptability, which can effectively improve the working efficiency of the engine and reduce Fuel consumption is widely used in conventional oil and gas and shale oil and gas exploration and mining, large mining equipment and other fields. For a long time, the key components of such transmissions and the core technologies such as automatic control are in the hands of foreign companies. China's related technologies have been monopolized and blocked by foreign countries, which seriously restricts the development of major domestic technical equipment.

Aerospace science and technology and related scientific research institutions have carried out research on the design and manufacture of hydraulic transmissions in the fields of high-power, off-highway and special vehicles. After more than 30 years, significant achievements have been made. First, increase the number of friction plates and piston cavity pressure to improve the torque transmission capability of the product; second, use multi-layer printed plate integrated oil circuit design to reduce the number of peripheral oil pipes; third, use new materials and special heat treatment processing technology to greatly improve key zero The performance of the components; the fourth is to develop a new automatic shift control system to effectively reduce the vibration and impact during the shifting process.

The results authorized 21 invention patents, presided over the drafting of one industry standard, and included 12 national key new products. Appraised by the expert group organized by the Science and Technology Department of Guizhou Province, the result is the first in China, and the technology is leading in China and has reached the international advanced level of similar products. In 2015, the achievement won the Outstanding Achievement Award for the integration of military and civilian development in the national defense science and technology industry.

Aerospace science and technology applied this achievement to develop the world's largest input power (3300 hp) planetary hydraulic transmission, the country's first independent high-power automatic hydraulic transmission and other components, these components are used in high-end fracturing equipment, marine engineering Equipment, rail transit, high-end engineering machinery, special vehicles and other equipment have broken the technical restrictions and blockades abroad, which is of great significance to promoting the progress of China's major equipment technology and driving the development of high-end equipment manufacturing in China.

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