In the face of the embarrassing situation that foreign-funded enterprises accounted for more than 85% of the domestic port-to-machine market share, the SANY port machines faced difficulties. In 2005, its independently developed RSC455M container lifters successfully went offline, which was produced by SANY. The first front crane. In 2006, it launched the first self-developed stacker.

With constant innovation, Sany’s front crane and stacker became the No. 1 brand in China. Among these, the dynamic anti-rollover protection technology pioneered by the Sanyi Port Machinery Research Institute is one of the best in the industry, adding a lot to the market competitiveness of SANY Port Machinery products.

According to the reporter's knowledge, the front crane and stacker are widely used in the loading, unloading, site transfer, and stacking operations of containers such as ports, docks, railways, highway transit stations, and yards. They are key equipment for local logistics of containers and they have lifting capacity. Strong, stacking layer, mobility, high operating efficiency. However, in the actual operation process, cases of head lift and stacker overturning are not uncommon. Once overturned, it often brings huge losses to customers. So at that time, the R&D team of the Port Machinery Co., Ltd. was determined and must Fundamentally solve the problem of tipping.

After full market research and technical demonstration, the R&D team found that the response of the traditional torque protection device was delayed and the anti-rollover effect was poor. As a result, they decided to set off on their own. In 2006, they formally proposed dynamic R&D protection technology. With the in-depth development of this technology, the two major problems of anti-rollover, such as two roadblocks, are blocked by R&D personnel.

Zhou Yiyun, director of the Sanyin Port Machinery Hydraulic Control Institute, told reporters: “To develop anti-rollover protection technology, we must overcome two major problems. One is the reliability of the height measuring device; the other is to determine the accuracy of the working condition model. ."

“Foreign equipment rarely involves anti-rollover protection. There are few height detections. Even if there is a simple height measurement and use of a laser or pull-wire type sensor, the sensor cannot meet the harsh operating environment of the port and is expensive. The original height measuring device of a port machine is cheap and reliable, and the cost is less than 1/6 of the former.” said Luo Jianzhong from the Hong Kong Maritime Research Institute.

The second roadblocker - building a model for judging working conditions is even more complicated. “There are many variables in the model, such as mast height, gantry angle, vehicle speed, and friction between the vehicle and the ground. In addition, in reality, the reliability of the model needs to be continuously tested and the development process is difficult.”

Hard work pays off, and the modeling team has continued to tackle the problem. Finally, the dynamic torque anti-tipping model was creatively created so that the equipment can accurately determine various operating conditions and completely solve the anti-rollover problem.

At present, anti-rollover protection technology has been applied in batches to the 31-heap machine and front cranes. The port machinery products with anti-rollover technology have passed the appraisal of scientific and technological achievements in Hunan Province and have been exported to Germany, the United States, Brazil, Russia and other countries.

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