The hottest shield made in Zhengzhou will be rolle

"Made in Zhengzhou" shield machine goes offline Henan Cheng manufacturing base

made in Zhengzhou shield machine goes offline Henan Cheng manufacturing base

China Construction machinery information

Guide: the cutter head has a diameter of 6.28 meters, weighs more than 37 tons, and is 75 meters long. It is like a giant dragon. Such a behemoth stands in the production workshop of China railway tunnel equipment manufacturing Co., Ltd. (hereinafter referred to as China railway equipment) in Zhengzhou Economic and Technological Development Zone. This is the shield machine, which is in the construction of tunnels, subways and other projects

with a diameter of 6.28 meters, a weight of more than 37 tons and a length of 75 meters, the cutter head is like a giant dragon. Such a behemoth stands in the production workshop of China railway tunnel equipment manufacturing Co., Ltd. (hereinafter referred to as China railway equipment) in Zhengzhou Economic and Technological Development Zone

this is the shield machine, which is an essential equipment in the construction of tunnels, subways and other projects. Since the start of China Railway Equipment Zhengzhou plant in April this year, two shield machines have been offline in Zhengzhou at the same time

but since the end of the sample is not firmly pasted to serve the people and the motherland, there have been 38 shield machines made in Henan, and 5 such machines have been used in Zhengzhou Metro Line 1 under construction

this year, more than 30 "made in Zhengzhou" shield machines have been rolled off the line.

China railway equipment is a professional subsidiary of China Railway Corporation, a world's top 500 enterprise, which is mainly engaged in the research and development, design and manufacturing and technical services of tunnel equipment. At first, it has been produced in Xinxiang. Last year, China railway equipment, which originally planned to move out of Xinxiang to other provinces, was retained by Henan and settled in Zhengzhou Economic Development Zone in March last year

on July 4, the relevant person in charge of Zhengzhou Economic and Technological Development Zone introduced that the total investment of this project of China railway equipment is 500 million yuan, and the annual production capacity of shield machine is more than 40 sets, forming a shield industry chain integrating basic research, design and development, processing and manufacturing, and technical services. China Railway shield machine with independent intellectual property rights has achieved mass and serial production, and the technology and performance of the whole machine have reached the international advanced level

it is understood that the two shield machines made in Zhengzhou will be put into the construction of Beijing Dongzhimen rapid rail transit project. This year, more than 30 "made in Zhengzhou" shield machines will be offline, and the price of each shield machine ranges from more than 30 million yuan to 200million yuan

a shield machine can drive 1000 meters a month

shield machine is a large-scale mechanical equipment that cannot be separated from subway construction. As a special engineering machine for tunnel, it can realize tunneling, rock slag loading, tunnel wall support, and one-time excavation. It is currently a tunnel construction machine bearing the world's most cutting-edge technology, and it is also the most representative major key equipment to measure the level and capacity of a country's equipment manufacturing industry, It has become an important subject of major national science and technology projects

however, for a long time, shield machines used in China mainly rely on imports from developed countries, which are not only expensive and have a long manufacturing cycle, but also controlled by others in key technologies

the peak period of tunnel construction in China has arrived, and it is urgent to have domestic shield machines. In 2001, the Ministry of science and technology of the people's Republic of China included the development of key technologies of earth pressure balance shield in the theme of robotics in the automation field of the "863" program, marking the prelude to the localization of shield in China

China railway equipment has undertaken five projects of the national "863" plan, including "development of composite shield machine". In April, 2008, the first composite earth pressure balance shield "China Railway No.1" independently developed and designed by China was successfully rolled off the production line, realizing the leap from key shield technology to machine manufacturing, and filling a gap in the field of composite shield manufacturing in China

how many people are needed to operate such a large machine weighing hundreds of tons? Jiao Weihua said that when operating a shield machine in underground construction, no more than 10 skilled workers can drive a distance of 15 to 30 meters every day. Under normal circumstances, a shield machine can drive about 1000 meters a month, with an average of more than 10 kilometers

Henan has become the largest shield machine R & D and manufacturing base in China.

for the following introduction:

in 2010, China railway equipment produced 23 sets of shield machines annually, accounting for one third of the domestic annual sales, ranking first in the world. Its "research and application of key technologies of hard rock shield component kit" won the major science and technology special project of Henan Province in the "Eleventh Five Year Plan", and the whole machine technology has filled the domestic gap

at present, 38 sets of China Railway shield made in Henan have been produced, and Henan has become the largest shield R & D and manufacturing base in China. China Railway shield has been widely used in Beijing and Tianjin. It has agreed to prepare for the construction of subway and municipal projects in Guangzhou, Shenzhen, Wuhan, Xi'an, Hangzhou, Zhengzhou, Chongqing, Shenyang, Wuxi, Ningbo, Dalian and other cities in Tongling City

Zhang Zhiguo, assistant general manager of China railway equipment, said that the localization rate of China Railway No. 1 Series shield produced by China railway equipment has reached more than 60%, and many key components have been fully localized, forcing foreign shield prices to drop by about 20%

Jiao Weihua, for example, after the hard rock shield equipped by China railway came off the line, it forced the foreign shield of the same specification from more than 100million yuan to more than 50million yuan