The shield machine has been in existence for nearly 180 years, starting in the UK and developing in Japan and Germany. In the past 30 years, through the key technology in the earth pressure balance type, mud-water shield machine, such as the effective sealing of the shield machine, to ensure the stability of the excavation surface, control the surface uplift and collapse within the specified range, the use of tools The life and the replacement of the tool under sealed conditions, the exploration and research of some harsh geology, such as high water pressure conditions, have enabled the shield machine to develop rapidly.
According to incomplete statistics, there are currently 18 major manufacturers of foreign shield machines, concentrated in Japan and Europe and the United States, such as Japan's Mitsubishi Heavy Industries, Kawasaki Heavy Industries, Komatsu Manufacturing, Hitachi Shipbuilding, Ishikawajima Heavy Industries, Herrenknecht, Germany Company, Wilter Company, Robbins Company of the United States, and Luofat Company of Canada. Each manufacturer can design and produce different diameters, different types, and special requirements of shield machines according to different geological conditions, different engineering objects, and different requirements of the use unit to meet the needs of users, and its processes and equipment. advanced.
(I) Mitsubishi Heavy Industries, Ltd. Japan's Mitsubishi is a corporate group with a history of more than 100 years. The current business scope is not only maintaining the traditional shipbuilding industry, automobile manufacturing industry and chemical industry, but also the financial sector. In the past years, he has been involved in cutting-edge technology fields such as nuclear energy, aerospace, ecological environment and deep sea development. There are 29 direct companies under it, and Mitsubishi Heavy Industries is one of them. It provides construction of soft and hard soil shield tunneling equipment for the world. The Ministry of Machinery is a branch of the Kobe Shipyard under Mitsubishi Heavy Industries.
From the manufacture of Japan's first hand-drilling shield machine in 1939, to the Kobe Shipyard in 2003, a total of 1,608 shield machines were built, including earth pressure balance, mud balance, double circle, three circle, MMST, etc. Types, quantities and types are the best in the world, and technology ranks first in the world. For example, two shields were used to dig the shield tunnels used in the British-French Channel. It has supplied a 11m diameter earth pressure balanced shield machine to the Lyon region of France, and produced a mud-water pressurized shield machine for the second cross-river tunnel project of Yan'an East Road in Shanghai, producing a diameter of 14.14m for the Tokyo Bay submarine tunnel. Mud water pressurized shield machine, etc.
Among the 1,608 shields, Japan's Mitsubishi has created several firsts. In addition to the first Japanese hand-drilling shield, Mitsubishi made Japan's first mud shield in 7970, with a diameter of 7290 mm. In 1986, it made a horseshoe-shaped mechanical excavation shield; in 1989, it provided two earth-pressure shields for the Anglo-Strait Tunnel. In 1991, the horseshoe-shaped ECL shield was manufactured; in 1992, the earth pressure shield with a diameter of 10.96m was manufactured for the French Lyon highway; the largest double-circle shield was manufactured in 1993; the Tokyo Bay Tunnel was manufactured in 1994. Three sets of the largest mud shield at that time; the three-circle shield was manufactured in 1995; in 1996, a rectangular shield of 7950 mm × 5420 mm was manufactured to meet the needs of common trench construction; in the same year, the spherical cutter shield was completed.
In 1997, Mitsubishi provided the MMST shield for the Kawasaki Expressway; in the same year, Mitsubishi updated the diameter of the soil pressurized shield to 11.52m; in 1999, Mitsubishi produced the first mother shield; in 2001, in the Osaka Common Ditch Project, Mitsubishi has built the largest MSD shield with a diameter of 8.07m, which solves the shield docking technology.
(2) Komatsu Manufacturing Co., Ltd. (KomatsuLtd.)
Founded in 1921, Komatsu Manufacturing Co., Ltd. is a multinational group company that has been in the cross-industry field for 80 years. The group company is composed of 142 companies (control and shareholding companies) including Komatsu.
In addition to the world's leading construction machinery and industrial machinery, the company's main products are also involved in electronic engineering, environmental protection, engineering, civil engineering, transportation, distribution machinery, metal materials manufacturing and sales, software and finance, and service industries. And other high-tech fields. Its tunnel construction machinery includes shield machines, rock roadheaders and pipe jacking machines.
(3) Kawasaki Heavy Industries, Ltd., Japan
Kawasaki Heavy Industries was founded on October 15, 1896. It is a well-known Japanese company that has developed from ship repairing and shipbuilding. It is a leader in modern marine technology. It also produces aircraft and aviation equipment, airport boarding systems, and baggage systems. Railway vehicles, large bridge structures, power supply, heating, natural gas transmission equipment, environmental engineering facilities, etc., are also pioneers in robot production.
In the underground construction machinery, more than 1,200 soft rock and hard rock excavators have been produced, such as the 13.94m diameter shield machine for the underground reconstruction project of the Kanda River in Tokyo, and the 14.14m diameter shield tunnel for the Tokyo Bay Undersea Tunnel. The machine, the shield machine used for the excavation of the British-French Channel Tunnel, and the shield machine used in the Shanghai Metro Tunnel.
PhilicFlow, an reliable valves manufacturer of all kinds of Ball Valves,WCB/CF3/CF8/CF3M Ball Valve,Electric Ball Valve,Pneumatic Trunnion Ball Valve, Shutoff/Shutdown Ball Valves,
Ball Valve,WCB/CF3/CF8/CF3M Ball Valve,Electric Ball Valve,Pneumatic Trunnion Ball Valve, Shutoff/Shutdown Ball Valves
Zhejiang Philic Fluid Control Co.,LTD , https://www.philicflow.com