The picture shows the shield machine
How good is China's shield machine technology? After winning the core technology, not only did it break the Western monopoly! And it has also achieved exports, so how difficult is it to manufacture? After the difficulty was exposed, India could not afford it at all, because the country had introduced a shield machine from the Chinese side, and as a result, in the face of the equipment dismantled into parts for transportation, Indian engineers said that they were helpless, and finally they could only invite domestic engineers to help, even the assembly was so difficult, the manufacturing difficulty can be imagined.
The picture shows the domestic shield machine
Shield machine is a very important engineering equipment, it is a French engineer by a hull wood for food animals, invented a kind of excavation technology and mechanical combination of results, today made in China such products are not only good at hard rock excavation, good applicability, workmanship is also very exquisite, but also the price is relatively low, sweeping the world, occupying 2/3 of the international market.
However, it is difficult for many people to imagine that only 20 years ago, there was no Chinese figure in this field, and even in order to build a tunnel, the Chinese side also needed to spend 700 million yuan to purchase two second-hand shield machines from Germany, the most important thing is that once it encounters a failure after buying it, it can only stop work for a month, waiting for German experts to come to repair, and even in the maintenance process, not only to pay more than thousands of dollars a day in the maintenance process, but also to pull up a guard belt and prohibit Chinese from entering. On the one hand, the efficient excavation of this kind of machinery makes people aware of its important role, on the other hand, the attitude of the Germans also deeply stimulates the nerves of the Chinese people, so China decided to carry out independent research and development of shield machines.
The picture shows a shield machine made in China
In 2002, China Railway Tunnel Group set up a shield machine research and development project team, the group consists of 18 people, most of them are just graduated from college students, many people have not even seen what the shield machine looks like, the difficulty of this team can be imagined, but in these researchers sleep and forget to eat for many years of struggle, only two years later in 2004, China has created a subway shield machine forerunner with independent intellectual property rights, In 2009, the 11.22-meter-diameter Jinyue was built and the Dapu Road Tunnel was opened.
In addition, the domestic shield machine has achieved the same level of technology and Western products, although in some areas and some of the more advanced models compared to the slightest gap, but compared to Germany and Japan and other countries to create hundreds of millions of dollars of products, Chinese manufacturing will often be cheaper than its 20 million to 40 million US dollars, in the case of performance differences, give such a huge discount, naturally will make Western countries flock to this, so including Russia, Denmark, Italy, Many countries, including Turkey, have purchased Chinese products, and even India, which has always announced that it will boycott Chinese manufacturing, has also purchased Chinese-made SHIELD machines for the construction of the Bangalore subway, which can be called "saying no on the lips, but the body is very honest".
In short, China can achieve curve overtaking in this field, in fact, a symbol of China's strong industrial strength, and the leading position in the field of shield machines has promoted the rapid development of infrastructure, forming a virtuous circle, on the contrary, India, not only does not have a perfect industrial system, but also does not have the patience and ability to overcome difficulties and research and development, and naturally cannot build its own shield machine.