Facing with the situation that more than 85% of the marketing shares in domestic port machinery market were occupied by foreign-funded enterprises, Sany Group confronted the difficulties without shrinking back. In 2005, RSC455M container reach stacker developed and manufactured by Sany was successfully rolled off the line, which was the first set of reach stacker produced in Sany; and then in 2006, Sany launched their first self-developed stacking machine.

Relying on uninterrupted innovation, Sany reach stackers and stacking machines became the first-class brands in domestic market. Moreover, the General Research Institute had developed the innovative dynamic anti-overturning technology, which was the unmatched advancement, adding more strength in terms of the competitive force of Sany port machinery products.

It was informed that reach stackers and stacking machines were widely used to conduct the container loading and unloading, yard transport and container stacking at the ports, terminals, railway and inland container depot and yards as the key equipment to realize regional handling and transporting of containers, which were featured with heavy lifting capacity, more stacking levels, powerful driving force and high operating efficiency. However, during the operation process, there were cases that reach stackers and stacking machines turned over on the working sites, bringing great loss to the customers. Targeting at such problems, the research team in Sany Group made their decision to thoroughly solve the overturning problem.

After sufficient marketing survey and technological examination, the research team found that the traditional force moment protection device was always delaying to respond, which led to the bad anti-overturning effect.

Zhou Chongyun, the Director of Sany Port Machinery Hydraulic Control Institute said that there were two difficulties hindering on the way of developing anti-overturning and protecting technology, “one is the reliability of the height measuring device, and another is the accuracy of model for estimating the operation condition.”

“As for the foreign devices, little was done to conduct anti-overturning protection. They seldom had the height measuring process, or there would be a simple measure through using the draw-wire sensor, which was not only expensive, but also unable to better meet the requirements of the rigid operation situation of the ports. The height measuring device developed by Sany was reliable and the cost was only one sixth of the former,” said Luo Jianzhong from Sany Port Machinery Institute.

To establish the model to estimate the operation condition was much more complicated. “There are lots of variants when establishing the model, such as the height of mast, the angle of the mast, the speed of the vehicle and the friction between the vehicle and the ground. In addition, in actual situation, the reliability of the model need to be tested for many times, putting more difficulties to the research,” said Mr. Luo.

All the efforts paid off. After days of hard working, the team creatively established the dynamic moment anti-overturning model, making the equipment able to accurately evaluate different operation conditions so as to deal with the anti-overturning problem.

At present, the anti-overturning technology had been gradually applied to Sany’s reach stackers and stacking machines. The port machinery products equipped with the anti-overturning technology had passed the technological achievement appraisal of Hunan Province, and were exported to the countries including Germany, America, Brazil and Russia.

图片文字：
三一堆高机批量出口至沙特
Sany Stacker Exported to Saudi Arabia in Batches

About Sany

Sany Group is a global company in the construction machinery industry with a vast product range of construction machinery, road machinery, excavating machinery, pile driving machinery, hoisting machinery, port machinery, and wind turbines.

Sany Group began in 1989 as a small welding material factory. Its founders are Liang Wengen, Tang Xiuguo, Mao Zhongwu and Yuan Jinhua. Now it has grown into a global corporation with five industrial parks in China, four R&D and manufacturing bases in America, Germany, India and Brazil, and 24 sales companies around the world. On July 1, the British newspaper Financial Times released the 2011 list of the world’s 500 most valuable companies (FT Global 500) ranked by market capitalization. Sany Heavy Industry (Code: 600031) was put on the list of FT Global 500 for the first time, ranked 431st, with a market cap of 21.584 billion US dollars. Sany has become the first company listed among the world’s top 500 companies in China’s construction machinery industry. Currently, Sany employs over 70,000 people in more than 120 countries.

At Sany, we believe that developing and manufacturing of quality, industry-leading products is always a top priority. Each year, Sany group re-invests 5-7% of its sales revenue into the R&D, making it possible to expand its product lines to concrete, road, port, hoisting, pile driving, excavating machineries and wind energy products. Now as one of the most successful enterprises in China, Sany group is also the world’s largest concrete machinery manufacturer and ranks 6th among the top 50 global construction machinery manufacturers.

Besides constantly improving the quality of our products, Sany group is also committed to providing customers with all-round and efficient services. 15 logistics centers and spare parts warehouses have been set up with logistics and service systems all over the world.

With its unique advantages, Sany is striving to help build a better world.