Recently，The construction site of Shanghai subway is a busy scene.，The 108 section of Chongming Rail Transit Line is being hoisted into the well by the cutter head.。10 a.m，Under the close cooperation of two crawler cranes of Zoomlion，Weighing 308 tons.“Shentong”The cutter head of the shield machine was slowly lifted from the ground.“Roll over”，Successfully complete the downhole task。

▲Zoomlion crawler crane is being hoisted on site.（Pictures from People's Daily Online）

Cutter head with lifting weight of 308 tons，And complete“Roll over”、A series of operations such as going down the well，Not only does it need a strong lifting capacity、Heavy equipment with stable performance，The two devices also need to cooperate with each other.，Strong adaptability to working conditions。After many considerations，The construction party finally chose Zoomlion.QUY650 crawler crane andZCC7200 crawler crane。

At the scene，QUY650 crawler crane as main lifting equipment，Adopt 36 m main boom of super-lift shield+Working condition of 12m jib，ZCC7200 Crawler Crane Positive Assist，Adopt the working condition of 42m super-lift heavy main boom。Close cooperation between two crawler cranes、Cooperate，“Shentong”The cutter head of the shield machine is slowly lifted from the ground，And finish turning over，Then the crane will lift the cutter head to the wellhead steadily.，It takes about 3 hours.，“Shentong”The cutter head of the shield machine went down the well smoothly。

Prior to lifting on site，The service personnel of Zoomlion are right.QUY650 andZCCPerformance of 7200 crawler crane、Health status、A comprehensive inspection of safety devices has been carried out.，Comprehensive safety protection measures have been taken.，At the same time, the operation and precautions of the product are explained in detail and patiently guided to the operator.。Zoomlion is thoughtful、Careful、Intimate service and product stability、High efficiency and excellent performance，It has won the unanimous praise of the construction party.。

  

▲Zoomlion crawler crane is being hoisted on site.

Excellent quality of Zoomlion crawler crane products by the construction party、Performance and construction hoisting performance are full of praise.：“The two crawler cranes performed very smoothly throughout the lifting process of the project.，Very efficient，It ensures the smooth progress of the whole hoisting project。”And be considerate to Zoomlion.、Careful、Very satisfied with the attentive service.。

It is understood that，Hoisting of this project“Shentong”The total length of the shield machine is 148 meters.，Designed with atmospheric cutter head。The diameter of the cutter head of the shield machine is 13.5 meters，Weighing 308 tons.，By a central block、6 main tool arms and 6 auxiliary tool arms are welded and assembled。Hoisting of two crawler cranes of Zoomlion“Shentong”The shield machine goes down the well，To provide assistance for the completion of the tunneling construction of the Nangang river-crossing section of Chongming Line.。Total length 7.After the completion of the 74 km Nangang interval tunnel,，Will become“The First Tunnel of Shanghai Rail Crossing the Yangtze River”。