said: “compared with other hoisting projects, the construction site of shield machine hoisting project has more restrictions

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Sany scc3200a crawler crane adopts the special working condition of shield and uses double hooks for operation

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The tunnels we took the subway through and the large-scale water diversion channels were all “dug” by this huge guy

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You see, now scc3200a takes 30 minutes to complete

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Sany construction machinery 2021-01-0708:46:01 shield machine is a special construction machinery for tunnel excavation

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So far, the hoisting of all parts of the shield machine has been completed

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Moreover, in the subway construction of shield machine hoisting project, the construction site is generally in the urban area, and the population density is large, so it is more necessary to do a good job of protection to ensure the safety of the project.” The strength of the subway is not only reflected in the city commuting, or the interconnection between cities, its importance, with the economic development of the city is becoming more and more prominent

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” Pan Xing of Beijing Tonghe hoisting transportation Co., Ltd

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The main hook is responsible for lifting out the main body of the 140 ton cutter head, and the auxiliary hook cooperates synchronously to realize turnover

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Therefore, the hoisting equipment must be selected by professionals after specific investigation and rigorous calculation at the construction site

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The whole lifting process takes only 30 minutes

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At present, Tianjin Rail Transit Line 6 has a total length of 45 kilometers, including 43.5 kilometers of underground lines and 1.5 kilometers of underground lines, with a total of 39 stations

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However, because the construction site of shield machine is generally narrow and small, not only the safety of construction, but also the stability of the shield body after running into the well should be considered

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In the 14th five year plan, Tianjin should create a development pattern of “Jincheng” and “Bincheng”, which is a major measure to plan the long-term development of Jincheng and Bincheng in the coordinated development pattern of Beijing, Tianjin and Hebei..

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In July 2020, Sany scc3200a crawler crane successfully hoisted the shield machine into the well in Jinnan District line of Tianjin Metro Line 6

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Modern shield machine integrates optical, mechanical, electrical, hydraulic, sensing and information technology, and has the functions of cutting soil, transporting soil slag, assembling tunnel lining, measuring and guiding deviation correction

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In the past, lifting this shield machine requires at least two cranes, which is low efficiency, high cost and high risk

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Shi Yuchuan, the main operator, said: “the car’s auxiliary hook is closely coordinated, the integrated rotary starting and stopping is soft, and the lifting performance is very strong

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My impression is that it is comfortable and can work

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Shield machine is generally large and heavy, so crawler crane must be used for hoisting in the construction of subway, and it must be placed at the tunnel excavation mouth

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