Shaanxi Shing Da Diameter Shield off the assembly line will help Xi'an Metro Line 5 construction

Shield machine is a comprehensive tunnel excavation equipment with multiple functions and integrates all functions such as excavation, excavation, support, grouting and guidance in the process of shield construction. It is understood that the "Jincheng 9" shield machine built by China Railway 20th Bureau and Tiejian Heavy Industry has a diameter of 6.25 meters, a total length of 84 meters and a total weight of 430 tons. It is a large-diameter shield machine manufactured in Shaanxi. The equipment has advanced and reliable cutterhead design and rammed soil improvement system. It adopts imported main bearing, main drive seal and main drive reducer. It has long life, high safety factor, and its comprehensive performance has reached the international advanced level.

“This time the off-line shield machine is an earth pressure balance shield machine that will be delivered in early 2018 to help the construction of the Xi’an Metro Line 5 Changming Road station.” said Wang Biqiang, Chairman of China Railway 20th Xi’an Engineering Machinery Company. China Railway 20th Bureau Xi'an Engineering Machinery Co., Ltd. Liangliang Production Base can produce more than 20 sets of shield machine per year, and the output value exceeds 700 million yuan. It will provide "Xi'an Zhizao" equipment for the northwest metro project.