An atmospheric pressure tool changing device and method for a super-large-diameter shield machine

Abstract

The invention relates to an ordinary-pressure tool-changing device and method of an extra-large-diameter shield tunneling machine. Multiple cutting tools are installed in a spoke working cabin of a shield tunneling machine cutter disc. The spoke working cabin is an ordinary-pressure working cabin, a cutter box is arranged on the cutter disc, and each cutting tool is installed on the cutter box. A sealing valve 30 is arranged between the cutter disc and the cutter box, a cutting tool installation clamp is arranged at the rear end of the cutter box and is provided with a clamp lead screw for release and installation of the cutting tools. The cutting tools are changed in the working cabin in a common usage state. The ordinary-pressure tool-changing device has the advantages that each spoke is internally provided with an independent airtight working cabin by reasonably optimizing a cutter disc structure, an operator can enter the airtight cabin for checking and replacement of the cutting tools on a cutter disc panel under the ordinary-pressure condition, the risk that the operator enters an excavation cabin for operation under the ordinary-pressure or under-pressure condition is avoided, the hidden dangers of safety accidents are decreased, the device maintenance cost can be remarkably reduced, and the ordinary-pressure tool-changing device has a remarkable application effect.

Description

technical field [0001] The invention belongs to a shield machine device, in particular to a super-large-diameter shield machine normal-pressure tool changing device and method. Background technique [0002] Shield machine is a kind of special engineering machinery for tunneling. Modern shield boring machine integrates light, mechanics, electricity, hydraulics, sensing and information technology. Functions such as measurement guidance and deviation correction involve geology, civil engineering, machinery, mechanics, hydraulics, electricity, control, measurement and other disciplines and technologies, and require "tailor-made" design and manufacture according to different geology, requiring extremely high reliability. [0003] At present, the shield tunneling method is widely used in the construction of urban subways and highway tunnels. With the increase of cross-river, river-crossing and submarine tunnel construction projects, the geological conditions and construction tech...

AI Technical Summary

Problems solved by technology

With the increase of cross-river, river-crossing and submarine tunnel construction projects, the geological conditions and construction technology are becoming more and more difficult, especially in complex geological conditions, super-large diameter tunnels, and long-distance shield construction. Severe wear and tear will reduce the excavation speed and the torque of the cutter head will continue to increase, which will seriously affect the efficiency of construction operations and endanger the structural stability of the cutter head

If an effective and reasonable method of opening the cabin is not adopted, maintenance and replacement of cutterhead tools may lead to serious consequences. As one of the major risks of shield tunnel construction, it is easy to cause huge losses in economic property, personal safety, etc.

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