On the morning of September 1，Construction Site of South Main Tower of Maanshan Changjiang River Rail-cum-Road Bridge on Chaozhou-Maanshan Intercity Railway，Zoomlion, the world's largest tower craneR20000-720 officially put into use，The steel tower of the first section weighing 313 tons was precisely hoisted and connected to 220.On a concrete tower 5 meters high，Demonstrate the strong strength of a big country's heavy weapons.，It marks the successful hoisting of the first steel tower of the south main tower of the world's largest span three-tower cable-stayed bridge.，The south main tower of the bridge is transferred to the steel tower construction stage of the upper tower column.。

It is understood that，Ma'anshan Rail-cum-Road Yangtze River Bridge is a control project of Chao-Ma Intercity Railway.，The total length is 3248 meters，It is the first three-tower cable-stayed bridge with double main spans exceeding 1000 meters in the world.，It is also the longest steel truss cable-stayed bridge in the world.。Zoomlion, the world's largest tower craneR20000-This time, the main tower in the south of the bridge was hoisted.，The tower is 306 meters high.，The steel pylon consists of 16 sections.，Maximum lifting weight of single segment 390.8 tons，All steel tower segments shall be pre-assembled in the factory.，Splice installation on site。

▲Zoomlion, the world's largest tower craneR20000-720 is being hoisted

The first steel tower column of this construction is the transition section from concrete tower column to steel tower column.，It is equivalent to lifting more than 200 cars to the height of nearly 80 stories at a time.，It has a large volume、The structure is complex、The construction is difficult、High safety risk and the like.。To help build the bridge.，Ensure superelevation、Overweight steel tower column is safe、Smooth、Fine hoisting，Before，Construction Unit CCCC Second Harbor Engineering Co., Ltd. and Zoomlion Jointly Develop the World's Largest Tower CraneR20000-720，This time byR20000-720 Successfully completed the task，Its rated lifting moment is 20000 tons per meter.，Maximum lifting capacity of 720 tons，Maximum lifting height 400m。

▲Zoomlion, the world's largest tower craneR20000-720 is being hoisted

“OursR20000-720 integrates 158 innovative scientific research achievements、305 invention patents，These include more than 60 core key technologies and 12 world initiatives.，Which solves the problem that the super-large tower crane is difficult to operate in strong wind,、High humidity、Many World Difficult Problems in Operation under Complex Extreme Conditions such as Heavy Load。It achieves a lifting performance of 60%A substantial increase in the above，Yun、Install、Dismantling、It is more convenient to use，The positioning accuracy is below 10 mm.，It is also equipped with a tower crane intelligent command center.，Realize remote、Digitize、Fine management upgrade，In that construction of such prefabricate building，It can ensure the stability of the whole journey.、Quasi、Hurry up，Speed up project construction、Shorten the project duration。”Zoomlion responsible person said.。

The south main tower of the Maanshan Rail-cum-Road Yangtze River Bridge is scheduled to be completed by the end of this year.，After the completion of the whole bridge,，Regional high-speed rail network will be improved，Promote the integrated development of the Yangtze River Delta and the construction of the Yangtze River Economic Belt。As a leading enterprise in China's equipment manufacturing industry，Zoomlion continues to have strong R & D and manufacturing capabilities，Escort the construction of major global projects，Polish the gold-lettered signboard of the great power。