Shield tunnel heading machine

Abstract

The invention provides a shield tunnel heading machine. The shield tunnel heading machine comprises a cylindrical shield shell, a cutter head, a first driving mechanism and a second driving mechanism; the cutter head is arranged at the front end of the shield shell; the first driving mechanism is rotatably connected with the shield shell; the second driving mechanism is connected with the first driving mechanism; the first driving mechanism comprises a rotating shaft; one end of the rotating shaft is connected with the cutter head; the first driving mechanism is used for driving the cutter head to rotate; and the second driving mechanism is used for driving the first driving mechanism to swing so as to drive the cutter head to swing. After the cutter head swings, pressure of space between cutters at the edge of the cutter head and a stope face of a tunnel can be relieved, a technicist changes the cutters conveniently, labor intensity is reduced, and cutter changing efficiency is improved. In addition, when the edge of the cutter head is jammed by hard substances (such as rock), the cutter head can be released from the hard substances by swinging, and releasing capability of the shield tunnel heading machine is further improved.

Description

technical field [0001] The invention relates to a tunnel boring construction machine, in particular to a shield tunnel boring machine. Background technique [0002] Shield tunnel boring machine is an important construction machine in shield construction. Because shield construction has the advantages of safety, reliability, small environmental impact, low labor intensity, less earthwork, and high efficiency, it is widely used in urban rail, water conservancy, municipal engineering, mines, highways, railway tunnels and other fields. Because the shield tunnel boring machine is often constructed in a complex and long-distance working environment, its transmission system must be able to withstand heavy loads and large impacts, and have functions such as tool change in the hole. [0003] The shield tunnel boring machine mainly works under pressure during the construction process. In the under pressure state, it is required to deal with the problem with the fastest speed and the ...

AI Technical Summary

Problems solved by technology

Especially in the stratum with high rock strength, it is very difficult to manually remove the tool replacement space in a narrow space, and the operating environment is very harsh

[0004] During the construction of long-distance and high-strength rock tunnels, the shield tunnel boring machine has complex construction environments, unpredictable working conditions, and high requirements for ground settlement control. Due to the high rock strength and rapid tool wear, Shield tunnel boring machine tunnel excavation diameter changes greatly, and the cutter head wears quickly, especially the edge cutter of the cutter head is easy to wear and needs to be replaced frequently

Under the conditions of large buried depth, high pressure and narrow space, the tool change of the cutter head under pressure increases the difficulty of tool change, increases the labor intensity, and reduces the efficiency of tool change

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