Annual output of 50 shield machines and high-end mining machines

1.

The largest shield machine made in China refers to the self-developed shield machine in China; Jinghua;, At present, this shield machine has been offline, and many people pay special attention to the function of this shield machine. In fact, the main function of this shield machine is still to excavate the tunnel, but different from other shield machines, its working section is very large. Now let's introce the function of this shield machine{ RRRRR}

so for this shield machine, the biggest function is to meet the construction requirements of large tunnels, people can use this equipment to complete the construction at one time

2.

The well-known brands of shield machine are: Shanghai Tunnel Engineering Co., Ltd., North China heavy instry group, China railway construction heavy instry group and China Railway 16th Bureau Group. The specific analysis is as follows:

the domestic shield machine with independent intellectual property rights is the domestic "863" series shield machine developed by Shanghai Tunnel Engineering Co., Ltd

In 2007, Geng Hongchen, the chairman of North heavy instry group, signed an equity transfer agreement with the former shareholders of NFM, which made North heavy instry have the most advanced core technology and famous brand of a full range of tunnel shield machines in the world

on November 14, 2015, the first large diameter shield machine made in China, which was jointly developed by China railway construction heavy instry group and China Railway 16th Bureau Group, was launched in Changsha

Therefore, it can be seen that the well-known domestic brands of shield machines include Shanghai Tunnel Engineering Co., Ltd., North China heavy instry group, China railway construction heavy instry group and China Railway 16th Bureau Group

extended data:

shield machine has a history of nearly 200 years since it was invented, which started in Britain, developed in Japan and Germany. Through the key technologies of earth pressure balance and slurry shield machine, such as the effective sealing of shield machine, the stability of excavation face and the control of surface uplift and collapse within the specified range are ensured

the service life of the cutter, the replacement of the cutter under the sealed condition, and the exploration and solution of some adverse geological conditions, such as the treatment technology of high water pressure, have made the shield machine develop rapidly

reference source: network shield machine

3. On April 25, the first compound earth pressure balance shield machine independently developed by the state "863" plan was successfully put off the proction line in the shield instrialization base of China Railway (Guba) tunnel group in Xinxiang City, Henan Province, marking a substantial breakthrough in the R & D and manufacturing localization of shield machines in China, filling a gap in this field in China, It has set a new milestone in this field

the diameter of cte6390 composite shield machine is 6.3m, and the maximum driving speed is 8cm / min. it not only has strong geological applicability, but also has made significant progress in adapting to bend construction, steering correction, rolling correction and improving geological conditions. The design also fully considers the emergency disposal of the shield construction in the cutter head trapped state, the safety protection when entering the cabin with pressure and the response to emergencies such as water gushing, which has higher safety and reliability

the shield adopts the operation mode of "independent design, independent research and development, global procurement", adheres to the design concept of "reliable, applicable, economic and advanced", realizes the leap from key shield technology to whole machine manufacturing, realizes the digestion and absorption of foreign advanced technology to re innovation, and achieves the expected goal in terms of shield localization rate and cost rection, It also makes China's shield manufacturing level into the international advanced ranks. This success has opened up a more realistic and reliable channel for domestic tunnel and underground engineering to improve construction speed, improve safety quality level, effectively control cost and shorten construction period, which will greatly promote the further popularization and application of shield machine in domestic tunnel and underground engineering, And it will eventually end the history of our country relying on foreign shield for tunnel construction in complex geological environment.

4.

The shield machine imported from Germany needs about 50 million yuan, the shield machine imported from Japan needs more than 30 million yuan, and the price of domestic shield machine is about 25-50 million yuan

shield machine, fully known as shield tunneling machine, is a kind of special engineering machinery for tunneling. Modern shield tunneling machine integrates optical, mechanical, electrical, hydraulic, sensing and information technology, and has the functions of excavating and cutting soil, transporting soil ballast, assembling tunnel lining, measuring and guiding deviation correction, etc

it involves geology, civil engineering, machinery, mechanics, hydraulic, electrical, control, measurement and other disciplines and technologies, and it is necessary to carry out "tailor-made" design and manufacture according to different geology, which requires high reliability

extended data :

the basic working principle of shield machine is that a cylindrical steel component pushes forward along the tunnel axis while excavating the soil. The shell of the cylinder assembly is the shield, which acts as a temporary support for the unlined tunnel section excavated, bears the pressure of the surrounding soil layer, sometimes also bears the underground water pressure and keeps the underground water outside. Excavation, mping, lining and other operations are carried out under the cover of shield

The construction method of shield machine is to build (lay) the "shield" (supporting segment) of the tunnel while tunneling, which is different from the open construction method. In the world, generalized shield machine can also be used in rock stratum, but it is different from open type (non shield method) tunnel boring machine

5. I just started this year, and I don't know how many of them are, but the order volume is still very large. The workshop masters are busy working overtime. Recently, the company has been expanding its scale. In terms of property rights, it can be said that it has 100% independent intellectual property rights without any external technical support. In terms of shield, it can be said that it is at the forefront in China

6. On April 25, the first compound earth pressure balance shield machine independently developed by the state "863" plan was successfully put off the proction line in the shield instrialization base of China Railway (601390) tunnel group in Xinxiang City, Henan Province, marking a substantial breakthrough in the R & D and manufacturing localization of shield machines in China, filling a gap in this field in China, It has set a new milestone in this field

the diameter of cte6390 composite shield machine is 6.3m, and the maximum driving speed is 8cm / min. it not only has strong geological applicability, but also has made significant progress in adapting to bend construction, steering correction, rolling correction and improving geological conditions. The design also fully considers the emergency disposal of the shield construction in the cutter head trapped state, the safety protection when entering the cabin with pressure and the response to emergencies such as water gushing, which has higher safety and reliability

the shield adopts the operation mode of "independent design, independent research and development, global procurement", adheres to the design concept of "reliable, applicable, economic and advanced", realizes the leap from key shield technology to whole machine manufacturing, realizes the digestion and absorption of foreign advanced technology to re innovation, and achieves the expected goal in terms of shield localization rate and cost rection, It also makes China's shield manufacturing level into the international advanced ranks. This success has opened up a more realistic and reliable channel for domestic tunnel and underground engineering to improve construction speed, improve safety quality level, effectively control cost and shorten construction period, which will greatly promote the further popularization and application of shield machine in domestic tunnel and underground engineering, And it will eventually end the history of our country relying on foreign shield for tunnel construction in complex geological environment.

7. Now the most is China railway equipment

8. It depends on the model and configuration. Generally, about 40 million people are used in the subway

9. The development and proction of shield machine in China began in the 1990s. With the strong support of the state, the shield machine instry has made considerable development and progress, breaking the long-term monopoly of foreign countries. Although there is still a lot of price difference in the overall level, it has reached the international leading level in some aspects, and its future development prospects are promising
according to the data of "forecast and data analysis report on the development prospect of China's shield machine instry", 231 shield machines of various models were proced in China in 2015, and 1074 shield machines were proced in the world; However, in 2012, only 141 shield machines were proced in China, and 883 shield machines were proced in the world, with a significant increase in the proportion
however, it started late after all. Compared with developed countries, there is still a certain gap, and there is still a lot of room for improvement in the future. Specifically, China's overall design and system integration technology is relatively backward, key parts rely on imports, and most shield machine manufacturers fail to master the core technology.