The first domestic hybrid excavator off-line technology is no longer subject to human

On August 20th, the first commercial hybrid excavator independently developed in China was successfully rolled off the first industrial park of Hunan Shanhe Intelligent Machinery Co., Ltd. “This marks a major breakthrough in the research on energy-saving and environmental protection technologies in the field of domestic construction machinery, breaking the monopoly of foreign companies in this field and an important milestone in the commercialization of hybrid excavators in the Chinese construction machinery industry. "The China Construction Machinery Industry Association excavator branch secretary Li Hongbao said.

Hybrid technology is subject to people

According to Prof. He Chinghua, Chairman of Sanhe Intelligent, with the increasingly serious global environmental problems and shortage of resources, energy conservation and emission reduction have become the focus of major excavator manufacturers. The hybrid technology derived from automobiles, through the joint work of different power sources, makes full use of their respective advantages to improve the utilization of energy, and can achieve the purpose of reducing fuel consumption and reducing harmful gas emissions. Engineering machinery works on the principle of With the strong commonality with automobiles, hybrid technology is recognized as the most promising excavator energy saving solution.

It is understood that in order to compete for the high point of the hybrid technology used in construction machinery, many well-known foreign excavator manufacturers have introduced hybrid excavators, and many domestic excavator manufacturers have turned their attention to the introduction of foreign mature technology . Because there is no independent intellectual property rights, domestic enterprises must not only pay huge technology transfer fees for the introduction of foreign technology, but also tolerate various "technical exploitations" in the process of use.

Break the foreign technology monopoly

In order to break the technological monopoly of foreign construction machinery companies in the hybrid field, Shanhe Intelligence set up a scientific research group from 2005 onwards, insisting on “from basic principle research to simulation tests, from bench test verification to production prototypes and commercialization”. Independent research and development, hope that through its own research and development for the domestic construction machinery energy conservation and emission reduction explore a sustainable development.

"We have gone through the technological accumulation and scientific research in the past five years, and we have gone from the theoretical research of hybrid excavators and simulation tests to bench test verification to the commercialization of commercialized hybrid excavators for domestic construction machinery. The practice and application in the hybrid field have found a way out," said He Qinghua.

According to Zhang Daqing, deputy dean of the Shanhe Intelligence Research Institute, the hybrid excavator of Shanhe Intelligent's new offline line uses a parallel hybrid system to achieve the same workload. The output power of the engine will be greatly reduced, and the power consumption will be reduced at the same time. Emissions, the overall energy-saving effect of more than 20%, the whole machine rotation when the noise index decreased by more than 50%.